I striped the carb as the bike had been stored so I thought that a good clean would do no harm , when I refitted the carb it sounds like it is flooding it is so rich and then only with the throttle wide open , I restripped the carb and I seem to think that I might have when I rmoved the main jet I seem to think that there is should be a sleeve held in plave in the tube, is there an aeploded view of this carb available, I swopped carbs from another CRF and it runs great so there is definatly something wrong with the carb.