he said all damage was on top end, though I would consider rings bottom end. He is reputable I just never imagined it would be that high. I guess I was wrong. The motor is currently out of bike... He has done all work to diagnose problem. I just found oil in tb and blowing out pipes. he said multile valve seals were shot and 2 rings were cracked which caused the smoke under throttle. so he is replacing all 8 rings to be safe as well as going through and cleaning up the head,(forget the word he used) cleaning all valves, intalling new guides, adjusting the lash of all of them. then new gaskets for head and valve cover. Oh and engine ice and a oil change. Think I should ask any other questions? What would cams and hc pistons really give me? I really dont utilize the power of her as it is.