The condition of your rings won't affect your idle speed, the speed at which the wheel spins is determined by the clutch springs. If it's running good now, everything should be fine! You could turn down the idle slightly if it doesn't mind when warmed up, usually you want it around 1800 hot I think. It will run faster when cold because of the enricher.
These little guys don't idle at 200RPM like a Harley!
