An Autopilot question..

Hi all Im trying to add autopilot to the Trimotor bassicly what i did was copy AP info from the Cessna 182 and pasted it in the trimotor aircraft.cfg now I can get Altitude hold and win leveler to work but heading hold is just wacky seems if i press hdg hold the plane goes crazy and starts flying in circles. Is there any one experenced in autopilot settings that might be able to tell me what to do to fix this