I have a few 1911's so whenever I come across some used USGI mags I buy them. Most of what I have are the WW11 era mags with the pinned base. My problem is, most of them don't fit. If any of you have had this problem and I would think that you have, what did you find to be the solution? Has the recoil spring over time bowed the sides out? The mags I speak of have various levels of wear, no dents, dings or rust and have been tried in more than one gun. They are just too tight. Some can not be used at all. Before I attempt to put these in a vise I was wondering if you guys might have a better fix.