Bought this 1990 A3 50 Bullet TT (2 speed auto) last year.1200 original miles. Ran perfect in all respects. This spring it wouldn't start. Took off carb assy, and cleaned dirty bowl. Took out jet, it was plugged solid. Opened it it, cleaned it out w/carb cleaner. Also needle, seat. Installed new plug. Now ped starts and runs, but two things. 1st, ped most of time won't shift into 2nd, sometimes it will. 2nd, top end when it does go into 2nd, top speed is @ 22mph. Ped was doin much better last year. Any thoughts where to start lookin? Much thanks for your help...