Hello I have just bored out my sons 2003 lt 50 it had to be done it was not getting oil and blew up now I mix it is .050 over I want to mill the head and shim the jug please give me your thought's on what is the best route to take I removed the top jet in the carb but all the jets are stock any thought's on what size to use with the over bore? Any thoughts on clutch work? And do you need to buy a exhaust pipe or can you modify the stock one please help me I don't know how much to mill off or shim the jug to get the best results he is getting beat pretty bad at the races everything there is hopped up and his is stock with all restrictors out thank you for any help you guy's can give me Aaron