M. Flight Simulator - problem with one of the THQ sliders

[Cheyyen]

I recently discovered, that my rightmost slider on THQ module works ingame like stick's x axis.
It doesn't detect it in controls settings screen when I move it, but works as is ingame. When i try to bind it to anything else it detects as said axis. Both other sliders work as intended.
I haven't change anything in VKB software and it works fine in other games. I can center it, but its easy to touch it by accident when using the one next to it as trim
Any solution?