OK,thanks ill make a note of it.I probably wont mix the rudder anyway.Like you said,messes with crosswind landings,and my sons DVII didnt like crosswind landings either.
Anyway,so i dont hijack the thread.I sold a stock ryobi,except i had a rcexcl ignition on it.Stock carb,exhaust,ect.Im at 3,000 feet,.i was easily getting 7000 with a 18x6 with a power point or a black MAS.Cant remember.I removed the head,put it in the head of lathe so the base flange was between the teeth.Then i rounded the cylinder down even with the exhaust flange.Ill have to go see if i sold it here and post a pic.