I don't remember the KO carb exactly but if it is anything like most of the other CT carbs it needs very careful attention to cleaning. I believe it has the usual emulsion tube that needs to be knocked out and cleaned with a wire. Have you done that? Any of the tiny orifices need to be carefully reamed out with a tiny piece of wire. Some times the openings get plugged to where you have a hard time finding them. I find that a wire from a wire brush works nicely for this task. Don't get frustrated by having to pull the carb again. Just think of how much of a CT carb expert you are becoming. I have been in and out of carbs six or seven times before I got them right.

Hoo