Nav Pilot in Auto mode

[Winesk]

My Navpilot works well in the Navigate mode but in the Auto mode it drifts off about 10 degrees before correcting. I'd like to hold a closer course. I'm sure there is an adjustment for this but I can't find it.

 

[Johnny Electron]

The symptom seems to point to a problem with heading information that the pilot is using. What is your heading source? Have you compared that to the GPS Course Over Ground and the helm compass when holding a straight course?