Markoz wrote on Aug 9^th, 2019 at 11:02am:

Have you tried FMS and ONS modes with the HDG Switch ON? I ask because I wonder if the HDG Switch needs to be ON for the RXP GTN 750, like it is needed to be ON for the default CIV-A INS. It's strange that you can't post in the 1011 Captain II forum. :-/

Yeah i couldnt find a post button on the L-1011 forums.
Anyways, yes i tried pressing HDG on the MCP but the heading doesnt change. WHen i was departing out of CYVR the heading just changed to 340 and didn't let me change it in the FMS and ONS mode. in VOR mode i was able to change the heading manually but for some reason the L-1011 and the RXP isnt communicating. The CS 737 works fine with the RXP because i believe the Sperry autopilot you guys made is custom configured to work with the default GPS and that allows the RXP to work with it. However the CS L-1011 autopilot works differently and is catered to the INS. I also tried pressing NAV but the aircraft doesn't do anything different. I've noticed if i put my flightplan in the GTN 750 AND the INS the plane follows the INS route but not the GTN route. If i turn off the INS midflight the plane still follows the INS route even though the INS is off???