diff --git a/Sources/CalculateAtFeature/CalculateAtView.swift b/Sources/CalculateAtFeature/CalculateAtView.swift
index c847abd..fb57630 100644
--- a/Sources/CalculateAtFeature/CalculateAtView.swift
+++ b/Sources/CalculateAtFeature/CalculateAtView.swift
@@ -10,7 +10,7 @@ import TCAExtras
 @Reducer
 public struct CalculateAtFeature: Sendable {
 
-  @Reducer(state: .equatable)
+  @Reducer(state: .equatable, .sendable)
   public enum Destination {
     case infoView(InfoViewFeature)
   }
@@ -39,16 +39,16 @@ public struct CalculateAtFeature: Sendable {
       && values.targetValue != nil
     }
 
-    public subscript<T>(dynamicMember keyPath: KeyPath<CalculationType, T>) -> T {
+    public subscript<T: Sendable>(dynamicMember keyPath: KeyPath<CalculationType, T>) -> T {
       calculationType[keyPath: keyPath]
     }
 
-    public subscript<T>(dynamicMember keyPath: WritableKeyPath<ValueContainer, T>) -> T {
+    public subscript<T: Sendable>(dynamicMember keyPath: WritableKeyPath<ValueContainer, T>) -> T {
       get { values[keyPath: keyPath] }
       set { values[keyPath: keyPath] = newValue }
     }
 
-    public enum Focus: Hashable {
+    public enum Focus: Hashable, Sendable {
       case existingAirflow
       case existingPressure
       case targetValue
diff --git a/Sources/PressureEstimationsFeature/EquipmentSettingsForm.swift b/Sources/PressureEstimationsFeature/EquipmentSettingsForm.swift
index 9cb04d0..cc988d7 100644
--- a/Sources/PressureEstimationsFeature/EquipmentSettingsForm.swift
+++ b/Sources/PressureEstimationsFeature/EquipmentSettingsForm.swift
@@ -42,10 +42,20 @@ public struct EquipmentSettingsForm {
       self.ratedStaticPressures = .init(staticPressures: sharedSettings.equipmentMetadata.ratedStaticPressures)
     }
     
+    private var equipmentTypeValidation: Bool {
+      guard equipmentType == .furnaceAndCoil else { return true }
+      return sharedSettings.heatingCapacity != nil
+    }
+    
+    private var filterDropValidation: Bool {
+      guard includesFilterDrop else { return true }
+      return sharedSettings.manufacturersIncludedFilterPressureDrop != nil
+    }
+    
     public var isValid: Bool {
-      guard equipmentType == .furnaceAndCoil 
-      else { return ratedStaticPressures.isValid }
-      return ratedStaticPressures.isValid && sharedSettings.heatingCapacity != nil
+      ratedStaticPressures.isValid
+      && equipmentTypeValidation
+      && filterDropValidation
     }
 
     // Note: These need to be in display order.
diff --git a/Sources/PressureEstimationsFeature/EstimationsForm.swift b/Sources/PressureEstimationsFeature/EstimationsForm.swift
index 6cc791e..a213a03 100644
--- a/Sources/PressureEstimationsFeature/EstimationsForm.swift
+++ b/Sources/PressureEstimationsFeature/EstimationsForm.swift
@@ -52,7 +52,7 @@ public struct EstimationForm {
     }
 
     // Note: Keep in display order of the picker.
-    public enum AirflowSelection: Hashable, CaseIterable, Identifiable, CustomStringConvertible {
+    public enum AirflowSelection: Hashable, CaseIterable, Identifiable, CustomStringConvertible, Sendable {
       case cfmPerTon
       case cfm
 
diff --git a/Sources/PressureEstimationsFeature/PressureEstimations.swift b/Sources/PressureEstimationsFeature/PressureEstimations.swift
index 8bef696..847053e 100644
--- a/Sources/PressureEstimationsFeature/PressureEstimations.swift
+++ b/Sources/PressureEstimationsFeature/PressureEstimations.swift
@@ -5,7 +5,6 @@ import Styleguide
 import SwiftUI
 import TCAExtras
 
-#warning("Fix shared settings.")
 @Reducer
 public struct PressureEstimationsFeature {
   
@@ -19,7 +18,7 @@ public struct PressureEstimationsFeature {
   @ObservableState
   public struct State: Equatable {
     @Presents public var destination: Destination.State?
-    @Shared(.sharedPressureEstimationSettings) var sharedSettings = SharedPressureEstimationState()
+    @Shared(.pressureEstimationState) var sharedSettings = SharedPressureEstimationState()
     public var equipmentSettings: EquipmentSettingsForm.State
 
     public init(
@@ -108,11 +107,9 @@ public struct PressureEstimationsView: View {
   }
   
   public var body: some View {
-//    ScrollView {
-      EquipmentSettingsFormView(
-        store: store.scope(state: \.equipmentSettings, action: \.equipmentSettings)
-      )
-//    }
+    EquipmentSettingsFormView(
+      store: store.scope(state: \.equipmentSettings, action: \.equipmentSettings)
+    )
     .navigationTitle("Equipment Settings")
     .toolbar {
       NextButton { send(.nextButtonTapped) }
@@ -125,10 +122,8 @@ public struct PressureEstimationsView: View {
         action: \.destination.equipmentMeasurements
       )
     ) { measurementStore in
-//      ScrollView {
-        EquipmentMeasurementFormView(store: measurementStore)
-          .navigationTitle("Existing Measurements")
-//      }
+      EquipmentMeasurementFormView(store: measurementStore)
+        .navigationTitle("Existing Measurements")
     }
   }
 }
diff --git a/Sources/PressureEstimationsFeature/RatedStaticPressuresSection.swift b/Sources/PressureEstimationsFeature/RatedStaticPressuresSection.swift
index 05ee997..d16cd36 100644
--- a/Sources/PressureEstimationsFeature/RatedStaticPressuresSection.swift
+++ b/Sources/PressureEstimationsFeature/RatedStaticPressuresSection.swift
@@ -3,7 +3,6 @@ import SharedModels
 import Styleguide
 import SwiftUI
 
-#warning("Add info view destination??")
 /// Allows for rated static pressure fields to be optional values, setting their corresponding shared state values to zero when they're nilled out.
 ///
 @Reducer
@@ -38,7 +37,8 @@ public struct RatedStaticPressuresSection {
       case minimum
       case rated
       
-      var label: String { rawValue.capitalized }
+      public var label: String { rawValue.capitalized }
+      public var prompt: String { "\(label) Pressure"}
     }
   }
   
@@ -95,7 +95,7 @@ public struct RatedStaticPressuresSectionView: View {
             "Maximum",
             value: $store.maxPressure,
             fractionLength: 2,
-            prompt: Text("Max Static Pressure")
+            prompt: prompt(for: .maximum)
           )
           .decimalPad()
           .focused($focusedField, equals: .maximum)
@@ -106,7 +106,7 @@ public struct RatedStaticPressuresSectionView: View {
             "Minimum",
             value: $store.minPressure,
             fractionLength: 2,
-            prompt: Text("Min Static Pressure")
+            prompt: prompt(for: .minimum)
           )
           .decimalPad()
           .focused($focusedField, equals: .minimum)
@@ -117,7 +117,7 @@ public struct RatedStaticPressuresSectionView: View {
             "Rated",
             value: $store.ratedPressure,
             fractionLength: 2,
-            prompt: Text("Rated Static Pressure")
+            prompt: prompt(for: .rated)
           )
           .decimalPad()
           .focused($focusedField, equals: .rated)
@@ -138,4 +138,8 @@ public struct RatedStaticPressuresSectionView: View {
   private func label(for field: RatedStaticPressuresSection.State.FocusedField) -> some View {
     TextLabel(field.label)
   }
+  
+  private func prompt(for field: RatedStaticPressuresSection.State.FocusedField) -> Text {
+    Text(field.prompt)
+  }
 }
diff --git a/Sources/PressureEstimationsFeature/SharedPressureEstimationState.swift b/Sources/PressureEstimationsFeature/SharedPressureEstimationState.swift
index 3c5c02b..db86802 100644
--- a/Sources/PressureEstimationsFeature/SharedPressureEstimationState.swift
+++ b/Sources/PressureEstimationsFeature/SharedPressureEstimationState.swift
@@ -124,7 +124,7 @@ public struct SharedPressureEstimationState: Equatable, Sendable {
 }
 
 extension PersistenceReaderKey where Self == InMemoryKey<SharedPressureEstimationState> {
-  static var sharedPressureEstimationSettings: Self {
-    .inMemory("sharedPressureEstimationSettings")
+  static var pressureEstimationState: Self {
+    .inMemory("sharedPressureEstimationState")
   }
 }
diff --git a/Sources/Styleguide/KeyboardStyles.swift b/Sources/Styleguide/Modifiers/KeyboardStyles.swift
similarity index 100%
rename from Sources/Styleguide/KeyboardStyles.swift
rename to Sources/Styleguide/Modifiers/KeyboardStyles.swift