I have a FlightDek 180 with AP74 that's fed by a Garmin 296. Or not fed as it happens. The autopilot works perfectly in HDG and ALT modes but isn't working in NAV. As if it isn't receiving an output from the Garmin 296. Does anyone have the baud rate/settings that should be selected on both the Dynon and the Garmin? And info on how to select them on each unit? I'm sure that the wiring between the units is correct.