Corey,
I suspected as much, my new bike came with an older 38mm and notched slide and gave me fits jetting it. I'm not so against the 38mm on a 250, I have an '07 bike that just runs perfect with one. My '12 runs a hair softer off the bottom but revs to the moon, I suspect that is some porting variation as all else is the same. What has been the Smartcarb size of choice from GG testing? Is the taper bore a vertical taper, like some other "keyhole" bores?
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