1989 Tiara 3100 steering
I purchased a 1989 Tiara 3100 at the end of last year. The motors had been replaced with 8.1 Horizon EFI. Not positive, props I think are 22. When running one motor while trolling ( it does not matter which one) With a jumbo bag or two on that side the boat will not track, constantly fighting the steering, not a little but a lot. The auto pilot will not keep up with the corrections needed. With both motors boat steers and tracks perfect, auto pilot perfect. Wondering if this is a prop or rudder problem?