The operation appears to be a success
Old base removed.
I soldered fine extension wires to the tips of the CRT wires. That makes it a lot easier to thread through the new base pins.
I found some Permatex RTV in the garage so that's what I used. The old resin cement is mostly intact and in good shape so I left it alone. That meant I really didn't need to use much glue after all. It's only been an hour but it's holding well. I'll know for sure in 24 hrs after it fully cures.
Most importantly, it still test good