Joker, I reread some stuff and edited a portion I posted earlier about a 17" stainless or a 19" aluminum should be about right. It was supposed to be a 17" stainless or 15" aluminum.
I ran a 14.8x17 aluminum and a 14x19 stainless on mine and got almost the same exact numbers fuel, speed and rpm wise. I need to go to a 17" stainless.
http://www.wellcraftv20.com/communit...ad.php?t=12543
And get you a gallon of Seafoam, mix to what they suggest. Think it's 1oz per gallon.