Need help with rebuild

Hey Marco
Its a slanty
With a full bowl It might run a minute and a half,off choke.

OP, If you think or believe its a no gas issue,Fill the bowl through the bowl-vent as Marco mentioned.Then try this; splash a tablespoon or a bit less of gas down the carb, wait a half a minute, FLOOR the pedal, then hit it. If it fires up, back out of the throttle, and bring the rpm down to under 1000rpm. Then slowly bring it down closer to idle, while somebody sets the timing. And then let it idle.And a final timing check.

But I still think the timing is late. Are you very sure the dizzy is not out 180*?