It could, but I replaced the fuel pump with the Carter and confirmed 6 psi at the carb and it never changed the issue. I also checked the fuel filter. The sending unit and fuel line are all fairly new and all 3/8".
Do you run vacuum advance? If so disconnect and plug the vacuum line and try free revving it slowly in neutral and see if it goes away. I had a similar problem.
It could be rotor phasing. I had a rotor that was to tall and would arc to the top of the cap terminal instead of the side. See the burn marks in on the cap. Search msd rotor phasing video.
I also haven’t heard of that regulator. Don’t run a cheap regulator. I run a big mechanical and a holley red pump together. Don’t like the included holley regulators. Red pump doesnt need reg. No issues.
