I had a few hours last night to finally concentrate on the ap and I still cannot get it to operate correctly. I have followed the procedure and tried to go about it in a logical steps but I end up just randomly stumbling across a combination that works.
Often the nav switch and a few others will rapidy flick up and down as if not wanting to accept the command. The "pos3" or the ap trim turn device with the pic of the b52 on it as shown in the pic only works every now and then. I have to drag and pull it and its very very tedious. Often it will take off spinning and getting it to center on 0 is dam near impossible. Maybe a reinstall is in order?