whats the weight of your schiada ? ive got a 22.5 sun runner with a small block/290 out drive. it came with a pos aluminum 19(i think) pitch prop. with 3 in the boat, mild chop, and about 40 gallons of fuel, i was at 56 gps. i was over spinning that prop like crazy too. is you small block stock? what prop are you running ? what volvo out drive, 280 290 sx? single prop duo prop ?