Well we went riding Thursday and the smoke smelled of oil so I'm currently in the process of taking the head off and replacing the piston and rings. I ran into a few problems/concerns. upon getting the bike to TDC we loosened the timing chain and slid the 2 cams out and suspended the chain with wire from the frame-some how we lost TDC when I checked after removing the cams, will this be an issue upon reinstall? We loosened all the head bolts except for the 1 in front and the 1 in back of the engine reason being is it was so damn tight we started to strip the nut facing the rear-any ideas on how to get the nut off? We thought about heating it up with a torch or dremeling it off-any suggestions? and the final concern is do I need to remove the shims in order to pull off the head? Thanks for your input guys and girls!