Hi guys,
I too have just brought the Carenado Phenom 100 and straight away I had the issue with the rudder not working.............(it is very heavy on frame rates too).
Here is what happens to my Aircraft, the rudder works perfectly untill I engage the auto pilot...then when I disengage it I can climb, descend and bank no problems but the rudder refuses to work as if the auto pilot or Yaw Damper is still on.........
I found a short term solution. It is all to do with the Yaw Damper not disconnecting for some reason? (Bug). The only way to get the rudder to work normally again is to go to your key board and select CTRL+"D" to manually disconnect it and it will then work normally. (I have mapped a button to my joystick for the time being).
Best of luck.