diff --git a/TestFlightAPI/TestFlightAPI/TestFlightFailure.cs b/TestFlightAPI/TestFlightAPI/TestFlightFailure.cs
index d157018..a4819ea 100644
--- a/TestFlightAPI/TestFlightAPI/TestFlightFailure.cs
+++ b/TestFlightAPI/TestFlightAPI/TestFlightFailure.cs
@@ -111,7 +111,10 @@ public virtual void DoFailure()
 
                 }
                 FlightLogger.eventLog.Add(failMessage);
-                core.LogCareerFailure(vessel, failureTitle);
+                if (!previouslyFailed)
+                {
+                    core.LogCareerFailure(vessel, failureTitle);
+                }
             }
         }
         
diff --git a/TestFlightCore/TestFlightCore/TestFlightCore.cs b/TestFlightCore/TestFlightCore/TestFlightCore.cs
index 31a2bd2..8e122d1 100644
--- a/TestFlightCore/TestFlightCore/TestFlightCore.cs
+++ b/TestFlightCore/TestFlightCore/TestFlightCore.cs
@@ -561,13 +561,27 @@ public float ModifyFlightData(float modifier, bool additive)
                 newFlightData = Math.Min(newFlightData, initialFlightData + perFlightMax);
             }
 
-            // Adjust new flight data if neccesary to stay under the cap
+            // Adjust new flight data if necessary to stay under the cap
             if (dataCap != 1f && newFlightData > (maxData * dataCap))
                 newFlightData = maxData * dataCap;
             if (newFlightData > maxData)
                 newFlightData = maxData;
-            // update the scenario store to add (or subtract) the difference between the flight data before calculation and the flight data after (IE the relative change)
-            TestFlightManagerScenario.Instance.SetFlightDataForPartName(Alias, existingStoredFlightData + (newFlightData - existingData));
+
+            float dataToAdd = newFlightData - existingData;
+            if (perFlightMax > 0f)
+            {
+                // Prevent data from multiple engines from overflowing the per-flight cap
+                float currentFlightCap = initialFlightData + perFlightMax;
+                float distanceToPerFlightCap = currentFlightCap - existingStoredFlightData;
+                dataToAdd = Math.Min(distanceToPerFlightCap, dataToAdd);
+            }
+
+            if (!additive || dataToAdd > 0)
+            {
+                // update the scenario store to add the difference between the flight data before calculation and the flight data after (IE the relative change)
+                TestFlightManagerScenario.Instance.SetFlightDataForPartName(Alias, existingStoredFlightData + dataToAdd);
+            }
+
             // and update our part's saved data on the vessel
             currentFlightData = newFlightData;
 
diff --git a/TestFlightFailure_IgnitionFail.cs b/TestFlightFailure_IgnitionFail.cs
index db00214..a1f10c4 100644
--- a/TestFlightFailure_IgnitionFail.cs
+++ b/TestFlightFailure_IgnitionFail.cs
@@ -303,6 +303,8 @@ public override void DoFailure()
                 {
                     FlightLogger.eventLog.Add($"[{met}] {core.Title} failed: Ignition Failure.");
                 }
+
+                core.LogCareerFailure(vessel, failureTitle);
             }
             Log($"IgnitionFail: Failing {engines.Count} engine(s)");
             for (int i = 0; i < engines.Count; i++)
@@ -317,7 +319,7 @@ public override void DoFailure()
 
                     engine.engine.Shutdown();
 
-                    if ((restoreIgnitionCharge) || (this.vessel.situation == Vessel.Situations.PRELAUNCH) )
+                    if (restoreIgnitionCharge || this.vessel.situation == Vessel.Situations.PRELAUNCH)
                         RestoreIgnitor();
                     engines[i].failEngine = false;
                 }