OK, got it in a PM.
Basically a dupe of his post here, but he interacts & posts a couple photos that I can't access without joining that forum.

Says when he took out the recoil spring assembly a piece broke off, and again after shooting.

No details, no explanations, no descriptions of the process, other than a piece broke off when he took out the assembly, twice.

Dunno if it's worth joining to ask questions if he's not going to respond about exactly what he did.
Nobody else asked him there.
Denis