Hey, I have a Schiada too. Mine is a 20'er. You should be pretty close now but might want to try some 18's. I run bigger gears myself. I have 37% with an 11 x 16 two blade menkines. A 461" twin turbo big block chevy spun them 5,500 rpm. I'm stepping up to a blown injected 572" deal so I'm going to try some 40's. What degree box do you have? I have some 12 deg. 29's that you could try. Not doing me much good as my boat has a 10 deg. box in it. I plan on trying to trade them for some 10 deg. 40's. Oh, by the way I make a slick top bearing puller that makes getting the case apart a snap. It sure beats using a screwdriver! Let me know if you need one. My e-mail is valveautomation1@earthlink.net