Late night break to report my Autopilot findings. Okay, we have the following controls/switches and issues: far right side of A/P panel: AFCS Engage/Off. Center, Turn Knob. Far left, Pitch Up/Down (which doesn't seem to work at times). Bottom button row left to right: HDG Sel (Heading Select which does work but may suddenly/inexplicably shut off). ALT (Altitude Hold). Radio (which I think is Radio NAV navigation hold which doesn't seem to work with GPS or the VOR radios). Turn that on and it cuts off the ALT Hold. APP (Approach Hold) doesn't seem to work yet. General behavior I noted: The Pitch Control doesn't seem to work at all. It will move the Trim Wheel but then the Trim Wheel resets itself to where it was before trying to change the pitch by that control. This condition exists with the ATL Hold on or off. Also, I have had the model overshoot both the altitude and the heading setting without warning when before it was working fine. The failure was spontaneous, no inputs of changes. Anyhow, am going to talk to Big Radials about this and see what they think. Otherwise, it is a fine model and flies very well by hand.