Bad Gas issue....fuel guys....fuel!

After not starting for a couple or a few months, it was a sumb**tch, to get the Dart going...crank, crank, sputter, backfire, then when it does catch, afterfire in the exhaust. Pull the plugs and they are black and wet with fuel. I finally have started draining the front bowl of the carb and filling it with fresh fuel and do not have a problem.

Everything else is up to snuff, fuel pressure, timing, lash, mixtures, bleeds, etc., etc.

The car runs and starts great if I do not let it sit too long.

The last post I could find on this issue is about 7 years old. I have not tried to put any fuel stabilizers in it.

Any other words of wisdom??