Lights flickering slightly?

So 10+ years ago, iirc, I had an Accel distributor and a stock alternator.
I now have an MSD distributor and an alternator with an internal regulator.

Inbetween I think I had the MSD and stock alternator, I got a solid state regulator, search 35-300 on ebay, and a NAPA solid state flasher.

Iirc, do not use the 35-300 if you don't have electronic ignition.

The 35-300 solved my charging issue, and the NAPA flasher solved the dimming lights issue, (see below, iirc I had relays and H4 headlights by then, so maybe just the dash lights were dim).

I know for sure the NAPA flasher solved an issue on another car with an MSD and a stock alternator.
The dash lights only worked on one side, most of the time, extremely dim on the other. Headlights might have had the issue described above, not sure.

Both cars have 2 NAPA flashers now, and the directionals flash like a modern car.