Lean pop off idle?

I’m wondering if this carb has some sort of problem. Because I bought it used from a member here (don’t remember who) and when I unboxed it, you could tell that it had been backfired through because of all the burns and “soot” in it.
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I’m not blaming anyone but myself for these problems, because I’ve done all the work, and really have no experience with carburetors.
Maybe I should just stick with EFI haha