I totally agree that cutting back the fuel would be necessary to see BETTER results, i do believe that you should see some without. AS far as a fuel pressure regulator cutting back the fuel delivered.... I dont see how that would do much. With my experience...and im no carb expert, the fuel pressure is set to keep fuel in the float bowl, too much pressure.... it will push past the needle valve overflowing the float bowl and dumping excess fuel into the intake....as long as theres fuel in the float bowl, the crab is still gonna deliver what its gonna deliver based on air flow and jet size, someone please correct me if I'm wrong. The only way that I know of to lean a crab down is with smaller jets. If I could actually see some solid results I would without a DOUBT spend the money on a new weber crab, get a nice selection of jets, a high output alternator, a cell that can crank out some nice volume of Ho and see whats possible
..I just want to see some results so I can find some more incentive
.....coffee, you got any pics of your setup and its layout? I'M gonna build one!....