I have an autopilot installed in a Miles Magister. I have added all the required autopilot section to the aircraft.cfg and made the appropriate entries in the air file. The ALT hold works fine. When I switch on HDG hold the A/C wobbles about +/- 25° from the selected heading. It does not work at all in NAV mode even though I have the NAV set to a VOR and the VOR gauge works to select my NAV heading. What do I have to do to get it working? Thanks, Bob.