Tuning a Proform/Holley carb, what parts and tools?

Finally got a spotter to ride along, fuel pressure drops to ZERO after a few seconds at WOT!

New stock tank
3/8 sender and line to Carter M6902
https://m.summitracing.com/parts/crt-m6902
-6AN to QFT regulator and to carb
No return line at this time.

Why is this setup not working?

What is my best option to fix this?



Hmmmmm. How old is the pump? I rebuilt my pump myself but, it was hard to find the parts. Not all of those pumps are the same. I'll see if I can find the name of the company that made my kit. They are pretty sharp.