Yup, that for sure is the one because I opened it up and it looks just like this one NEW Azodin Rocksteady reg seat
Just hit them up to see if I can get some replacement parts. I'm almost positive it's the spring because it has so much play it actually rattles. I don't recall if it did when I got it (on a used marker) but it could have been the fact that I was running my remote line directly into the front block of the autococker and just had the reg hole plugged. Basically I was using it as a grip.
Would running 300psi through a reg backwards blow it or cause that spring to deform? I could see the possibility.