hey, is your motor still winding over with the same amount of compression.... if so, hopefully its just somethin' simple... but a blocked jet sounds like the next place to start, if you didn't clean out your carby when you refreshed your motor.. you should do it now, as your carby and exhaust are so vital in a fast 2 stroke setup.. if its(air/fuel) not going in or comin out properly, you'l never get the proper potential of your motor... and while you've got the carby off, have a look at your reeds, did you reassemble them at all in your motor rebuild.. maybe something came loose...
morty

__________________
Queensland Pocketbike Racing...
2 Pocketbike tracks located within 30-40 mins of the Brisbane CBD..
Home of the most Junior Aussie Champs in Australian Pocketbike History..!!

Helping Kids move on to bigger & better things..!!

Open to Pocketbikes 5 days per week/50 weekends a year.. Aswell as Night Racing
Club specific info here >>>> WWW.MORTYSMINIMOTOS.INFO <<<<