RE: Welcome to Club SAITO !
Saitos have a different way to break in, and tuning is a little different than an OS or Magnum.
The best thing would probably be to set your hs and ls needles back to the factory settings. It should be about broken in by now, so peak your hs and leave it there. Start leaning out your ls until you get to a point where it doesn't want to transition from idle to lots of throttle. Then, back off about 1/16 on the set screw and set your hs around 300-400 rpms richer than peak.
The 72 is a strong, smooth running engine when the ls is set right. A Saito really doesn't need a smoke trail in most cases.
Do you have the metal back plate on yours?