Holy shit was that a pita. I switched out the units, at least the upper housings, and then I couldn't get any pressure. Took it apart, made sure that the regulator baffle was sealed, retightened the upper housing and tried again. Still leaking. Well maybe a half a dozen tries later, I finally figured out that the replacement spring isn't strong as the oem spring. So I cleaned up the oem unit and put it back on. I now have 10.5 psi, apparently I had a small leak, where I was loosing 1.5 psi constantly!!! 10.5 is with the oem regulator, and I can't move the bottom of the regulator to attempt to adjust it. I did try, even dripping with gas and brake cleaner I thought about heating it up just for a second. I just went out and looked at it, it's still dry, it was always damp around the bowls and down the back of the tbi unit. Now I just need a replacement spring and I can redo my redone regulator. Yea!!!