Well, I took the carburator off and cleaned it with carb cleaner, so it is possible that it somehow got more gunked up, so would it need to be getting oxygen through the screw hole?
I recently had gotten a biturbo for my puch, an i had a motorcycle shop put it on, and they said i was all set. Acceleration had been miserable, and it had been getting harder and harder to restart. After the exhaust was put on, it ran about 32. I was driving to work, and it felt like the engine seized, twice. Though it started back up and i have not had problems since. I assume that the fuel to air ratio as not good for the new exhaust.
I thought that it would overheat with the new exhaust if they had no actually rejetted it for me, and they may not have.
After cleaning the carb it started much easier, first kick- but if the idle screw is in it, or anything covers that hole it will not run, it will stall. Could it be that my clutch cable is not in right? Should i just try reassmbling the carb?