I'm hoping someone here can lend a hand, because I'm totally stumped right now. I recently bought my daughter a 93 DS80 so she could learn the clutch. It ran OK when I went to look at it but not great... sounded like it needed the carb cleaned up and the owner said it had been sitting for over a year with the gas in it. So I took it home and dunked the carb in chem dip overnight, reassembled and the bike wouldn't run hardly at all. It would run good for short bursts then load up to the point you had to hold it WFO or it would die. With the throttle WFO it would stumble and stutter and never really rev out at all. I've cleaned the carb numerous times, tried running it with and without the air filter to see if the filter was plugged up (it is now replaced with a new OEM unit), put new reeds in it though it didn't really need them and replaced the reed cage, cylinder, and base gaskets (cylinder has to come off to change the reeds). It has a new plug and fresh fuel and I still can't get it to run correctly, there was virtually no change in how it ran with all the work listed above. My only other thought is maybe it's over-oiling but I think I'm grasping at straws there... does anyone have any suggestions?