REFLECTOR:Century Autopilot

[Scott Derrick]

I just had my autopilot act real funny.  In flight today it wouldn't 
engage. After landing I searched for a loose connector and found none.

While sitting in the cockpit, engine off, I was pushing on the engage 
button repeatadly(stupid but it helped with the frustration!) it 
suddenly engaged.

Now though it tracks about 15 degrees to the left of the course selector 
  needle and stays engaged in course mode when I select NAV or APCH mode.

What's the best place to send this unit too to be checked?

Scott