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Message: [QUOTE="1999RM125RIDER, post: 1238582, member: 51687"] No, the deck surface has not been cut nor has the timing been changed. I have messed with the jetting a little bit...it was leaner than stock when i got the bike and i changed it back to stock. Should I go even richer? I run 92 octane and have been told i should run 94 and I will start doing this. Do i need further octane boost? I run Bel-Ray MC1 mix at 50:1. I have occasionally used cheap Chevron mix and run it at 40:1. I have also been told to run two cylinder base gaskets and this should help the detonation? Other things...Bills Pipe, FMF Powercore silencer, Vforce reeds and cage on the bike [/QUOTE]