Re: BRACKET OWNERS
I don't have a bracket, but I'll give my two cents anyway... ;D
Is it possible your motor is mounted too high? I ask this because you shouldn't be getting cavitation when you trim only a little bit up. If it's an option, I might drop the motor one set of bolt holes and see what happens.
The other thing I'm thinking is that you're under-propped. The WOT sounds right, but cruising at 4k rpm sounds a little high. If you get the same diameter prop and go up in pitch by 2", that might cure you. (Yeah, I know, I'm not the one writing the check, so it's easy for me to propose it.) More pitch should give you more bite, as it sounds like whenever you put an extra load on the motor (like carving a turn or lifting the bow out of the water), the prop isn't gripping the water and you're getting cavitation. Going up in pitch will cut down your WOT rpms, but how often do you go WOT? Is 5100rpms still in the recommended range for WOT? It should knock down your cruising rpms to a more comfortable 3600.
FWIW...YMMV
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