Maine Sail, mind telling me what make and model your japanese genny is ?
I too have a CS prop. At 3RH 14Dx6P I can do 3300-3500rpm on my 2GM20F. I later repitch it to 14Dx7P and max I got is 2800rpm (slightly higher if prop, shaft and hull is clean). Wonder if I should go back to 6P.
2002 Hunter 326, SV Millennium 2
1999 Macgregor 26X, SV Millennium