360 with ThermoQuad dies and won't restart when cold

I looked at a Holley that had the same issue, one squirter was stuffed. I also seen an AFB that had such a rotted leather pump cup that it would barely dribble gas out the shooters. More went up and out than in and down! TQ has same style plunger pump but may have a rubber cup now. TQ;s have some serious venturis (strong signal to pull fuel) so Im not sure why it would not restart. Id check float levels too.