Spoilers Axis Reverse Bug

I have a Thrustmaster Warthog Throttle, and I am trying to bind the grey slider to the spoilers axis. The default binding has spoilers retracted when the slider is fully back, and extended when the slider is fully forward. I want to reverse that movement, so pulling back extends the spoilers and pushing forward retracts them, just like the real spoiler handle.

However, when I check “Reverse Axis”, the spoilers get stuck at around 50% extension and would neither fully retract or fully extend when I moved the physical slider. Unchecking “Reverse Axis” gives me back the full range of motion.

Has anyone else experienced this problem with reversing axis?

I’ve the X52 pro and I use the slider with reverse axis without problems.

This thread has the same set up and it seemed to work: