360 with ThermoQuad dies and won't restart when cold

My 360 has a TQ, which has been rebuilt by a pretty good mechanic, FWIW. It starts up OK when cold, but the first time you come to a stop it dies and doesn't want to restart. It is a fuel starvation issue because it starts up fine when you spray some starting fluid down its throat.

I noticed that when opening the throttle I get no discharge from one of the squirters.

Any suggestions? Thanks a lot.

Might want to verify the fuel pump is working right also.