Well I leaned out the idle jet from a 42 to 35, and put a W6 needle in place of the W9. That finally got my mixture screw out from being closed all the way. Bike is running better, but put that air cleaner on and she just chokes down. Im quessing you mean the choke jet when you say starter jet? That should only have a bearing on things when I have the choke pulled.
Im about to throw an SHA on this bitch and see what happens.