Hi, sorry to hear about that. Sad to say, I didn't get any joy from Coursemaster, although they sent me updated chips and even had their 2IC on board my boat, the A/P continued to function very poorly. I resolved the problem by replacing the Coursemaster with a Simrad. Chalk vs cheese, I can tell you. The Simrad is superb.
Wish I could advise you of a cheaper solution, cheers, Alan.