Can't go wrong with anything from H.E.S.

Quick question, whats the ideal idle air gap measurement for the Novacarbs? I think its .6mm but not 100% sure. I'm pretty close on my idle setting, but if i pick the car up or while it on the box, while engine is running, the clutch engages enough to spin the tires, but not enough to move on the ground. There is room for improvement but I don't want to have a unstable idle do to being to lean. It will idle at a constant rpm but after 15 to 20 seconds it loads up bad and has a hard time clearing out. Thinking lean the LSN 1 to 2 hours and drop the idle gap to bring it back down. Motor has HES tunes and break in service and 1875cc through it, but hasn't dropped its nuts yet. am I being to picky?