what's your water temperature? I think the temp compensation is for water in the 60s and below.. not much of a summer problem.

Do you have a computer connected to your autoPilot or is it stand alone? It sounds like your trying to control the output percent at two places (Pilot console and a computer) and they're fighting each other.

Sean can probably speak to this possibility, but maybe you're using a computer and the serial circuit is noisy? Sean, is there a CRC?

I recommend you call AutoPiliot support tomorrow... they're very helpful.

Robert