I think your engine is way off. The high end is a no brainer. The low end is the fun part. If I were you I would do this. Open your high end theeish turns. Open your throttle to an approximate idle position by looking down in the barrel. Remove your fuel line from the carb. Attach a separate line to the carb. Now blow into the line and at the same time-open the low end until you here a hissing noise. You low end is now in the ballpark. Crank it up, dial in the high end and see how the low end is. "IF" you get an idle, this is good but now while its idling remove the fuel line from the carb. If the rpms increase before the engine quits, the low end is to rich. If the rpms go down and quit-too lean. This is in print in some engine manuals.