Racine2000,
If you are in a hurry, set the high end a little richer than max rpm, you'll hear the drop in rpm, and run the heck out of it. Soon, (after several tanks), you'll be able to set a decent idle.

If you want to do it right, check out the article titled, "Break-in: the secret to longevity and reliability" in the November issue of Model Airplane News.

It is inadvisable to run a new engine at max rpm or leaner yet for any period of time.

If you treat your TT right it will be happy and you'll get happier the more you use it. (I have beat the BLEEP out of one for four years and I still love it!) (It WAS treated well in the beginning.)

Jeff