an ideal idle would be no tire spin with no brakes applied or dialed in. If the tires move then the clutch is engaging and all you are doing is wearing down your shoes. try to get it to not spin the tires even if a little (I mean a little) bit of throttle is applied.
if the idle starts to die after just a few seconds, then lean out the low end needle till it is steady. then readjust the idle set screw. you may have to richen the high end needle. go to www.parisracing.com under tips for more answers