idle varies

[highballky]

somtimes 1500rpms next light 3000rpm.

[Fred Camper]

Sounds like sticking sliders, they need to be very, very low in friction and a near perfect fit. Not the best carb expert on this board, so I do hope others chime in.

[virgilmobile]

Or the throttle is not being returned back to the set screw(binding cable)
Also,that bike should idle down around 800-900 rpm and run smooth.

[Fred Camper]

Yes, the throttle must "snap" back and if not, you cannot be sure it is always closing all the way. An idle that drops then rises is sometimes a throttle return issue.