I own the White Automatic Blaster you can see in the Gallery.
I rode the Fools Gold Enduro last weekend and did great but I found I had some problems with consistant idling speed which is a problem with my auto clutch. It's set to disengage just before idle speed is reached which allows me to chug up hills in difficult conditions. I've just bought a new 38mm Mikuni roundslide carburetor to try out and would appreciate any jetting info you might have. I think the older KX500's used to come with them.
Thanks,
Kawadougie