I was hoping Larry might see this thread... I'm only at 80% load wide open and am wondering how much pitch to add to get into the 92-94% load range. Current top speed is 23.5 knots burning only 19.8 gph. Properly loaded the engine should be burning about 24.8 gph according to John Deere. New build 38 Wesmac, weight 17,000 lbs, JD 9 liter 500hp at 2,400 rpms (electronically limited to 2,450 rpms), 2:1 reduction, current prop is DQX 28x28. I'm thinking of adding at least 2" of pitch. Any pros out there who could give me some advice? Thanks.