you are 175? it all seems really fishy. i just raised my exhaust 1mm. thats all the porting ive done. i wonder if that accounts for the difference is. i know rafter's cylinder was heavily ported too and he was running 165.
it might have to do with humidity. who knows? eventhough im just breaking it in still ive pushed it pretty hard with good results. i feel that if there was a problem the difference between 175 and 125 one of ours shouldnt run.
still a mystery