Can you verify the carb jet #'s sounds like it is seriously over fueling. Also the choke enricher is a fuel adder and you can inspect it's operation with the top plastic cap off.
Just want to make sure you know you can leave the cables unhooked and and just loosen the two boot screws and rotate the carb 90 degrees to look tinker or test and then rotate it back quickly and tightern the t2 screws to check the result. Makes thing progress much faster.
P.S. carb issues out number ignition problems on a bike the new 20 to 1, I would guess