In that pic of the cap walk block is that a Heli-coil on the main cap threads? There really should be at least a solid insert like a Time-sert.
I could be wrong but the one on the left looks like it's been repaired.

Gus beer


64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60