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Ive ridden my 06 sno pro 440 3 times on fresh top end with no problems on NGK bra8 es plugs. I turned my timing up to #3 and burnt the top of the plugs off, so in turned down to #2 and burnt the top of just one of the plugs. Ive ran 110 race gas mixed 32:1 with no problems before at Timing at #2.I have stock jetting . Any Ideas as to whats causing it would be appreciated.
