A little update. I finally got a chance to test out the Wolff springs in the two problem mags. With about a hundred rounds between the two they functioned perfectly. I did a lot of reload type drills where each magazine had only two rounds. I was trying to see how they'd feed with the lightest spring pressure and if I could create the stovepipe issue some people have had with their EZ. I couldn't make a malfunction. The magazines are a bit stiff inserting full into a closed gun, but I'll take that for reliability. No spring binding in those two mags with the Wolff springs, so it was definitely some bad magazine springs from S&W in an otherwise nice gun.