I have a couple planes that as soon as you release the parking brake they start to move forward. This is with no throttle what so ever. This is just with a couple of plans and all others are fine. I have check my calibration on joystick and throttle. I was thinking the problem is in the aircraft config.

"I have a couple planes that as soon as you release the parking brake they start to move forward."Could be intentional. I've flown a Zenith in Arizona recently that required the parking brake be set while the engine was at idle. Releasing the parking brake allowed the aircraft to slowly creep forward.-John