Pat,Finally got to test a 25pitch today quicksilver Torrent(tempest with square vent holes) I think? after tips on chinewalking.THANKS!!! 1994 150EFI ,cmc plate,2 3/4 inches below pad.I got 69.7 GPS !!!! (69.4 with my wife and myself )19 psi @ 6000 rpm. three quarters tank of fuel and gear. I weigh 190 really thrilled with this champ!!!!this was 3mph faster than 23M cupped& B&B, Am I through?thanks..