I looked on the Stroker website and see that they sell 2 pumper carbs for the KLX 300. The 33mm needs some head stay grinding for the carb to fit but doesn't say anything about the 35mm. The 35 is $150 more. Anyone with comments on either? I see a lot of people with the 33 and they really like it. I'd like top avoid grinding if possible. Any help is appreciated.