It sounds like a lack of compression. If one valve was set to 0 and it was run at WOT this could cause a valve to tap the piston and get a slight bend (ask bear he's dealing with that now) best way to find out without tear down is a compression test. Are you certain that the timing was at top dead center when you lashed the valves??
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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.
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