I have a facet low pressure pump from napa. It cost me $45 4 years ago so im guessing its about $60 in todays dollars. Go get one. I was one of Jeremy's first customers and noticed the pump took a little bit of help from the low pressure pump until it would pump anything from 2 of the 4 delivery valves. After that issue was squared away I noticed my car was close to impossible to start. I found out he accidentally flipped the orientation of the pump internals. I had to purchase an old style pump pulley from ebay to retime my pump by flipping the new pulley 180 degrees. Now I can bet dollars to doughnuts that because jeremy built this pump after mine that your pump is NOT 180 degrees out.
how many turns in from fully removed is the fuel screw set from the factory?
And you are absolutely sure the valve timing is correct?