[Mayhem]

New mechanical pump, 2 new plastic clear filters between the tank and pump, one glass (well isolated from everything) just before the carb.

We dropped the tank, drained it completely, filtered the fuel through old T-shirts into 5 gallon fuel jugs, and kept sloshing and rinsing the tank with clean fuel.

We kept getting green soft material in little chunks/pieces the size of sawdust or wood shavings. I can only describe the color is that of neoprene gloves-kind of a bright deep green.

After multiple rinses it looks like most if it is out. The tank looked great, like new, as does the whole underside of the car.
We put it all back together, went and filled it the rest of the way with premium (the only performance shop with fuel is closed until Tuesday!!!)

It seems to be better, but the filters don't seem to want to fill up much. The plastic one is less than half full, and the glass was almost empty when I pulled in and opened the hood, Once I let it idle it filled back up, but the plastic one just before the pump won't get past half full.

We blew out the cool-can, the entire line back to the tank while it was off, the sending unit and sock filter looked fine.
The only possibility left would be something in the carb, but I cannot imagine how anything would get past the filter, and I REALLY don't have the knowledge or care to tear into a brand new carb.

The oil looks and smells fine, and the old fuel pump arm didn't have any signs of fuel smell. I have the stuff on hand to change the oil, but likely won't get to it today.

I'm gonna get cleaned up and drive it to our Saturday night meet and see how it does.