You're probably running stock jets with open exhaust, you're running way lean, these bikes have double sided headers so they are supposed to stay shiny, not blue.
For the popping, a temp solution is to turn out your air screws quarter turns till it stops. Check your jets.
Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats.
H. L. Mencken
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