OK, so today I was riding home at the bike was pissing gas in a near stream. My cracks have expanded.
I took it back apart and see where the design of the replacement female (male threaded) metal insert has a ridge that spreads the plastic.
As a temp fix, because I need to ride, I added some fuel resistent pipe threading and a thick washer to take the strain off the pump flange. I tested it for half an hour with no leak, but I am confident this will not hold.
I will be replacing the fuel pump, since the flange is not available seperately, when it comes in.
I'll post the home made tool I make to remove the large ring, and the process.