Problem with lear45 autopilot

I recently added the lear45 autopilot to the GPS window of an aircraft that didnt have an autopilot. With some help from BobL on the panel design forum, I got the sizing and display the way I wanted, and the autopilot works and functions well, but there is one problem. I can only change the heading and altitude increments by tens and hundreds, and not by ones.(eg 080, 090 etc..and 1000, 1100, 1200 etc..)I cant do 091, 092, or 1001, 1002, 1003 etc..)while the autopilot is engaged. If I dis-engage the auto pilot, then I can set them to whatever I want. As soon as I re-engage and try to change anything, I can only go by tens and hundreds again. I tried flying the Lear 45 and using the autopilot, and it works just fine in that plane, and I can change to any increment with it engaged. I copied the config for the guage entry exactly as it appears in the lear45 panel config, so Im baffled as to why this happens. Does anyone have any ideas?