Can anybody recommend an avionics shop in the Southern California area that is well-versed in Century autopilots. I've been having issues with my Century 41. The pitch control works fine but the roll control only works occasionally, usually kicking in 30-60 mins into the flight (yet weirdly it works quite well for the rest of the flight, only to not work on the next flight). I'm trying to wrap up my IFR training and would like have this functioning for my checkride.
Thanks guys!