PIT Pans on CDR’s

Needing some dogs for CDR’s. Any idea which kit goes on CDR’s?
Any idea how I can just get the dogs?
Before I tack welded the dogs on the rest, I had 3 come up gone after a trip down a rebar drowner by big beaver.

I got dogs for mine from Minnesotat Trapline supply.

Big question is where might one find some new springs ?

Okay thanks!
Springs haven’t been an issue for me. I’ve get 30 of the originals. They’ve seen a lot of use. Still stout.