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I'm at elevation 2221 running fatty fmf and power core2 changed the main to 280 and running rich would it help to go to a 270 main

Ok thanks

No more than 3000 ft yea jus the pipes

A slide was stuck I got it up and going and there's no power on the top end

Ok I'll look into that

I got it to start now it revs high and won't idle

Installed fmf fattys and powercore2 and rejetted to a 280 jet and now it won't start need help