Those maikuni tm24 Clone carbs are no good.
Did you verify your timing with a light? Have you compression tested it? Leak down test? Did you press the ignition side seal in too far? I’ve seen that happen on more than one rebuild, I like to use the oem stator to set the seal to the right depth.
There’s so many things going on here it would be hard to diagnose with the bike in front of me, but on the web it’s pretty much impossible.