Stick and Rudder issue

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So i finally dug up my CH rudder pedals and tried to give em a try just now. as of now i was just using the "z" and "x" on the keyboard.

I had the CH Combatstick all set up just fine. the X and Y axis were working fine and the Z worked the throttle...

But when I hooked up the pedals and tried to assign them to an axis, the computer decided to give them the X and Y, which basically overrides the combat stick rendering it useless...

I dont know how to solve this... and I dont particularly like flying with my feet!

can anyone help?