Majestic Dash 8 AP problem

[hgpilot]

I have the Majestic Dash 8 and was using FSUIPC 4.26 but having a nasty pitching problem while using the AP. On the Majestic forums it was recommended to purchase the FSUIPC 4.5 registered version and check the wind smoothing option. I did that but I still had the problem. I have since disabled turbulance in both FSX and FSUIPC but the problem remains.

Has anyone else experienced this issue and solved it by changing settings in FSUIPC?

Thanks...