Hello
flstf93,
the float height for that carb should be in your service man. if you don't have one you really do need to get one. with that being said , generally speaking most all carbs" most" can be set by being upside down and as the float " center" is level with the carb body, the float tang should just be putting slight pressure on the needle.
Also it was just rebuilt? did you replace the float? was the float "heavy"? did you get the needle seat tight? did you use a new gasket with the seat?
AND be sure it's the float problem..... leaking filter? fuel line? tank connection?
just a few things to check out before carb removal.....
hope this helps you out some.
John