diff --git a/main.lua b/main.lua
index fc25055..922075a 100644
--- a/main.lua
+++ b/main.lua
@@ -567,12 +567,12 @@ function PollVelocity()
             local vsVelocity = velsensor.getVelocity()
             
             -- correct for heading correction value
-            if Config.SensorCorrection.Heading == 90 or Config.SensorCorrection.Heading == -270 then
+            if Config.SensorCorrection.Heading == -90 or Config.SensorCorrection.Heading == 270 then
                 if vsAxis == "x" then vsAxis = "z" end
                 if vsAxis == "z" then vsAxis = "x" end
             elseif Config.SensorCorrection.Heading == 180 or Config.SensorCorrection.Heading == -180 then
                 vsVelocity = -vsVelocity
-            elseif Config.SensorCorrection.Heading == -90 or Config.SensorCorrection.Heading == 270 then
+            elseif Config.SensorCorrection.Heading == 90 or Config.SensorCorrection.Heading == -270 then
                 if vsAxis == "x" then vsAxis = "z" end
                 if vsAxis == "z" then vsAxis = "x" end
                 vsVelocity = -vsVelocity
@@ -685,14 +685,14 @@ function PollGimbal()
         end
 
         -- correct for heading correction value
-        if Config.SensorCorrection.Heading == 90 or Config.SensorCorrection.Heading == -270 then
+        if Config.SensorCorrection.Heading == -90 or Config.SensorCorrection.Heading == 270 then
             local temp = Angles.xAngle
             Angles.xAngle = Angles.zAngle
             Angles.zAngle = temp
         elseif Config.SensorCorrection.Heading == 180 or Config.SensorCorrection.Heading == -180 then
             Angles.xAngle = -Angles.xAngle
             Angles.zAngle = -Angles.zAngle
-        elseif Config.SensorCorrection.Heading == -90 or Config.SensorCorrection.Heading == 270 then
+        elseif Config.SensorCorrection.Heading == 90 or Config.SensorCorrection.Heading == -270 then
             local temp = Angles.xAngle
             Angles.xAngle = -Angles.zAngle
             Angles.zAngle = -temp
@@ -714,14 +714,14 @@ function PollGimbal()
         end
 
         -- correct for heading correction value
-        if Config.SensorCorrection.Heading == 90 or Config.SensorCorrection.Heading == -270 then
+        if Config.SensorCorrection.Heading == -90 or Config.SensorCorrection.Heading == 270 then
             local temp = AngularRates.wx
             AngularRates.wx = AngularRates.wz
             AngularRates.wz = temp
         elseif Config.SensorCorrection.Heading == 180 or Config.SensorCorrection.Heading == -180 then
             AngularRates.wx = -AngularRates.wx
             AngularRates.wz = -AngularRates.wz
-        elseif Config.SensorCorrection.Heading == -90 or Config.SensorCorrection.Heading == 270 then
+        elseif Config.SensorCorrection.Heading == 90 or Config.SensorCorrection.Heading == -270 then
             local temp = AngularRates.wx
             AngularRates.wx = -AngularRates.wz
             AngularRates.wz = -temp
@@ -743,14 +743,14 @@ function PollGimbal()
         end
 
         -- correct for heading correction value
-        if Config.SensorCorrection.Heading == 90 or Config.SensorCorrection.Heading == -270 then
+        if Config.SensorCorrection.Heading == -90 or Config.SensorCorrection.Heading == 270 then
             local temp = LinearAcceleration.ax
             LinearAcceleration.ax = LinearAcceleration.az
             LinearAcceleration.az = temp
         elseif Config.SensorCorrection.Heading == 180 or Config.SensorCorrection.Heading == -180 then
             LinearAcceleration.ax = -LinearAcceleration.ax
             LinearAcceleration.az = -LinearAcceleration.az
-        elseif Config.SensorCorrection.Heading == -90 or Config.SensorCorrection.Heading == 270 then
+        elseif Config.SensorCorrection.Heading == 90 or Config.SensorCorrection.Heading == -270 then
             local temp = LinearAcceleration.ax
             LinearAcceleration.ax = -LinearAcceleration.az
             LinearAcceleration.az = -temp