Cyecking out a new mag at the range today. It looks perfect and i xNt find any deformations in feed lips or anything. But i get an occasional bolt-over-base stoppage and the last round does this almost every time: And the original mag never does this ever. I'm thinking the new mag needs a fresh spring. Do officer mags take the same springs as gvmt mags? How the hell do i change it when the base plate is welded?