Weird oil leak coming from fuel pump???

moper said
Not me. If you saw bubbles the pump is bad. Replace it. I only use the Carters myself. Mancini, SUmmit, etc have them.

From the OP
I think all that made it fail was the ethanol-laced modern gas eating away the internal diaphragm.

The ethanol sucks. If you have a pressure gauge I'd bet the pressure is also fluxing.