well i could change to a norvel .074, but the thing is ive already epoxied in the firewall and the engine mount.... and im quite sure another engine wont fit because i had to custom fit those in due to the ap hornet's rear muffler setup... i think my only solution is to get a thinner prop and prop nut... ill try the hobby shop tomrow and see if i can find any subs... ill let u kno how it all wrks out.. thanks!