kxpegger I'm in Vegas also. Here is what I run. Float height 16mm, 165 main jet, 55 pilot jet, #7 slide, n82m needle with clip at #2 from the top, airscrew out to peak rpm aprox 2 turns, NGK BR8EG, fuel mixed at 40 to 1. Was out at APEX for a short while today drop me a pm lets go riding sometime.
Serafin
I'm usually out at APEX every weekend both Saturday and Sunday. Besides drinking beer, dirt biking is about it. I won't be out this coming weekend. Promised the wife I'd take her to Phoenix to see her Mom.
A good riding partner of mine also rides a KX500. He just had his motor rebuilt after 12 years of trashing it. The drive sprocket stripped the splines off the mainshaft. I think it was partly his own doing. He won't change out any parts until they've turned to dust!
I've been surprised by how many KX500's are running around out at APEX. I saw about 8 in one day counting mine and Bill's. I'll drop you a PM next time I'm out there. We've also been talking about going to Gold Butte here pretty soon.