My Siatek yoke connected through FSUIPC is no longer moving the trim wheel when the button is pressed. FSUIPC is detecting the button inside the calibration screen. When I grab the trim wheel with the mouse it speeds all the way to 15 Nose Up and then slowly wheels itself back to the original spot of 4.5. Something has changed and I don't know what. It's acting like the trim wheel is in some kind of lock mode. 

Any help please?

Thank you

Now I was trying to figure this out and when I lowered the flaps with lever calibrated through FSUIPC the trim wheel cut loose and went full Nose Down to 0. This is my new lock position from 4.5. I can grab the trim wheel with the mouse and move it up, but then it goes right back to the lock position of 0. I'm starting to think this is an FSUIPC issue. 

Probably.  Something basic like the trim switch should be mapped directly to that function in the simulator (you using FSX or P3D). The binding has nothing to do with PMDG.

P3D v. 3.3

Almost sounds like the autopilot is engaged