Thanks, would the two piece design be better as the one piece seems very soft unless mine had a fault, also after stripping the engine down i found only one copper head shim, is that right?
cant wait to get it working again i had run about 6 tanks of fuel through my savage with the new engine without touching the mixture settings and and it was starting to wheelie when changing into second gear even though it had fuel pissing out of the head and tonnes of smoke coming out of the exhaust. the gear ratio i am using is 18/47, AMAZING.

P.S. i live in the U.K. how much would the parts be to ship here?