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I took the boat out this morning to test with the prop installed correctly and I'm glad to report that it ran great. The engine knock that I thought I was hearing before was in fact caused by the prop and is now gone. The engine ran smooth and quite.

This morning I had 2 adults (including me), a 3 year old, and a little fishing gear, the WOT rpm was 5050 and top speed was 30. With this engine mounted all the way up I am unable to trim out much as it will begin to cavitate in turns. With the engine trimmed all the way in it is very quick to plane and reaches 30 mph without any trim. Also trimmed all in there is absolutely no cavitation.

Does anybody think that there might be something gained by lowering the engine one hole and having more trim adjustment?