340 build No POWER need help w tune
Where are the throttle blades set? You have to have it set so that only about .020" of the transfer slot is exposed, too.
You will have to pull the carb to check that.
Flip it over and look at the slot that the blades expose as they open. You want it to look like a tiny square to start with, then put it back together.
Turn your screws to 1.5 turns out, and start from there again.