Best Carb rebuild kit

Well, here we go....I got to looking at my carb tonight and noticed that there isn't much info on it. I have done a Google search and my carb has come up in a few different threads on several forums but noone seems to have a straight answer. The #'s I Googled are in the first picture. Can anyone give me any information? Would I be better off finding a different carb? It also appears so of the hardware for the step cam is missing and it's just kind of jumping around. That could be the cold start issue I'm having.

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