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Just curious to see if anyone is haveing problems with a 260 A/C, Generator Radar ARch, planing with 3 to 4 adults, full of fuel. I have to get people to move forward or it won't plane easily. WOT around 5000 RPMs is 39mph has anti foulding paint and the bottom is clean. over 4000 RPM's the bow starts to jump up and down until I use down trim tabs about 3 lights on the tab indicator.
When tryin to plane the tabs are half down and the engine all the way in. I have the mercruiser 377 with 320 hp that has catalyst. I have changed the props from 22.5 pitchs to 20.0 pitch that helped.
I have contacted my dealer to see what can be done to improve performance I have 19 hours on the engine.