One last thing. Tap into the fuel inlet line at the carb and install a tee. Run a 1/8" nylon pressure line up to the cowl just in front of the windshield. Temporarily affix a mechanical fuel pressure gauge to the cowl with duct tape, tie wraps or whatever (it's temporary) and monitor fuel pressure as you drive. No modern 4-bbl carb needs more than 5 psi at the carb inlet. More pressure than that will overpower the needle and seat and blow raw fuel into the intake manifold. If you observe in excess of 5 psi, install a regulator.