Here's one for the techs. At normal running speed, my boat constantly tends to turn to port. Autopilot is disengaged, props were checked this past winter and are right at spec, both engines are running at the same rpm's, trim tabs are neutral, and the rudder transducer is correctly set to correspond with rudder positions at straight ahead. The situation is the same with the autosync engaged and disengaged.
What am I overlooking?
What am I overlooking?