My 2003 Harley is missing when it first starts. Seems to do better when open throttle. A member told me that the ball in carb may be sticking.
Any help ?:

 

Or it could be the manafold leaking. Or bad sparkplugs.

 

Bad Gas?

 

Not too insult your intelligence, but how long have you owned your 2003 carbed bike? Are you using the enrichener properly and closing when the bike has warmed up?