I had a 6.0/409 put in my '01 Ski Nautique to get zero off. It skis much better with more consistent speed. However, with the ACME 668 the bump at 22off is huge, so I put the 1442 3-blade on it and the 22off bump is much smaller, however I am underpropped to the point it revs up like a jet ski coming out of the hole. Has anyone tried a larger size/pitch 3-blade on this setup?