Re: New here.
Im going to come down with joe. If it ran at all with that much fuel being dumped into the carb had to be mixing with a heck of a lot of air.
Air leaks makes them hard to impossible to start. At least it did mine. But the most likely spot is the manifold tube. If you sealed that and haven't removed the engine manifold bolts you should have it taken care of. It might be a spark problem, but my feeling is air leak.
My posts have entertainment value only. A bike ain't yours till it has your blood on it. Then it owns you.