twin 470's pulling to the Port side RPM's same

[max2fastboat]

:facepalm:Hi everybody Here's the deal as I bring up the RPM's my boat want to go to the port. less power less pull.
tried over powering the port engine over starboard but not help, any idears where to start to fix???
thanks all

 

[telstar1]

Re: twin 470's pulling to the Port side RPM's same

I think I understand your prob,steering wheel wants to spin to port and its hard to turn to stbd? If that is it just crank the zinc trim tabs behind props over a few notches(rear of tab to port) that should fix it.