ORIGINAL: Hobbsy
I didn't read that, and if I did, I wouldn't believe it. My friend has a saito 125 that is very slow to break in. It runs like poop after a gallon. No power yet, and sloppy transition. (Quote) from Not24
It's as simple as him leaning his Low Speed needle to optimum, it controls 80 to 90% of the throttle range and when set rich it causes a very good engine to run very poorly. Tell him to bring his engine to Colonial Beach for about half an hour. Any Saito is ready to roll in 45 minutes max. Same with the ST.
It's doing much better now. I think you're right about the ls needle. People seem to be scared to touch that one, and it does most of the work.