My bike is pre-igniting in the mid-range. If I lug it down or shift too soon I loose all my power and it almost stops. I have slowed the timing to almost 0, and am still running VP 110, and b10egv plugs. Any suggestions? I'll post what my compression is ASAP. This is what else is done to it '97 'shee bored 20 over, CPI Inframes, Fox Floats up front. Boss Noss 20 shot (x2), Trinity stage 4 intake w/ a Keihin 35 PWK 230 main, Hot Rod crank, Pro Design Cool Head, don't know what dome size or compression (yet). Running VP 110 with Red Line Two-Stroke racing oil 40:1. Considering alcohol. Please Advise!