Carburetor troubles

[98stangv6]

I bought a brand new Proform 650 mechanical secondaries carb last year when I put a set of aluminum heads on. I drove the car about 25 miles (worked great) before parking the car and draining the fuel system for the winter. I replaced the fuel pump and lines over the winter. I am getting fuel pressure, bowls are adjusted correctly and are getting fuel. It's not spraying fuel though. The rear squirters give a very weak stream under fuel throttle and the fronts barely trickle. Would this new fuel gum it up that quickly? I really don't want to tear it down. :mad:

[draggin50]

How long did it set? Id say it will need pulled apart and cleaned up. This pump gas aint worth a shit any more!

[98stangv6]

It sat empty for about 4 months.