Just got a carb from a buddy of mine and it seems strange. It's supposed to be from a 94-96 yz250, and it does say PWM etched in the body but it has the "airstriker" fins. Everywhere i looked shows PWM's as not having fins and only PWK's with or without fins. I have a 2000 CR250 38 PWK airstriker, and this carb doesn't look that different other than the bore. I took the thing apart and it has genuine Keihin jets (45, 168) and #5 slide, forget the needle number. Did PWM's ever come "airstriker"?