Twin 175's 2007's.. Starboard motor once up on plane at around 4000 to 4500 rpm's the motor jumps to over 5500 to 6000 rpm's then back down and back up. Trimming the motors up or down does not seem to rectify it, changed out the prop thinking it was a spun prop no dice with that either. Port motor runs fine no fluctuating at all. Both motors run off one fuel tank. Anyone else experience this sort of problem.
