Starting issue

might need 20+ to fire first time. 274H is going to want in the 15-20 range for initial once broken in at idle.

Fill fuel bowls with a syringe and hit the lever to pump squirters. Try to not prime the carb by cranking it over. That will cause cam issues. You want it to fire right away.

Make sure it's on #1 tdc compression with rotor pointing correct terminal.

Once fired up, get it to 2000-2500 and 35-40 timing.