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[QUOTE="psustang89, post: 1093066, member: 70466"]
Well, the recap is I bought a 94 RM250, rebuilt the top end, and it started loading up...BAD.  So, I stepped the main jet from a 182 down to a 175, change my mixture from 32:1 to 42:1 with Golden Spectro and 93 octane, and repacked my silencer (not that it matters).  The clip is in the 2nd position and the air screw is 1 1/2 turns out.

So, I've been told that stock jetting for my bike is 175, 48, 2nd slot, and 1 1/2 turns....which means my next point of attack in the pilot jet, right?  However, I was under the impression that the pilot affect the bottom end, and my bike is loading up in the mid-upper range.  Also, I've been told that MX bikes run rich from the factory and going smaller than stock on the jetting helps.

Basically, I'm tired of pulling the carb, buying jets, installing the carb, hauling the bike to the woods, and then finding out that it still runs like crap and fouls plugs.  Today I fouled 2 plugs in about 3 hours of woods riding.  My buddy didn't foul a single one in his 01 CR250 (oh how I wish I could afford a newer bike!).

Any tips, experiences, pointers???

I'm also looking to buy a flywheel wieight.....
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