Hi everyone Has anyone run into a problem with this bike and the rubber grommets between the carb and the intake breaking down. I think i am not getting a good seal. the bike starts and idles great, works good at 1/4 throttle in every gear, but when givin too much throttle it bogs and stutters. When pushing on the carb to hold it tight to the engine idle smooths out a little bit. Also when revved i see smoke coming from into when it stutters. Just curious if this was common problem or not.