Mb. You got a new case and bore right?? But you are using the old crank and rod is that right?? Because if the new bore requires a slightly shorter rod then that could also account for the valve hitting too. Or the stroke of the crank could be slightly longer due to the fact that your old bore and case were slightly longer. Im just brainstorming here. Give Tom a call for real. He has seen many different engines and I know he has help for you.
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MXR TrailBender 160R
SYC Perf head P&P,Matched intake and exhaust, A12 cam, Orange CDI & coil, Motorio pulley, 115mm Variator and lightweight drive face,11gm Sliders, UNI, modded muffler + 200 horsepower 
http://www.youtube.com/watch?v=3hx-hEWl10c
I'll take your insults as compliments and blame it on your lack of intelligence.
Last edited by SLESTAK75; 04-08-2013 at 08:07 AM.
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