Help with Hilmerby DC-9 panel

Hi all,I'm a big DC-9 fan and have been on again and off again trying to get the Hilmerby panel to work correctly in FS9. My goal is to fly a flightplan created in FSBuild and to use the RNAV feature on the panel to fly the flightplan (I know that's not 100% accurate).Anyway, on the autopilot, I can fly a desired heading until I switch over the first waypoint. Then, the aircraft just goes in circles. When attempting to go back to heading mode, it doesn't work. The only thing functional is the turn knob.Does anyone with this panel been able to get it to work? If so, did you make any modifications? Were you able to get it to work with either its own model or the SGA DC-90-30 or -50 models? This has been pretty frustrating since I even went so far recently to buy the Iron Knuckles DC-9 only to find it isn't very accurate and has its own issues.I tried getting a forum login at the Hilmerby website but wasn't able to.Any help would be appreciated.Eric