I still say HP ran a wicked bad batch of mag frames and springs because there for a couple of months people just couldn't get the .40 mags to run worth a damn and you and I both picked up mags during that same time frame and clipping the springs made them run smoother.Tried that. It was mostly the lips, then clipped the spring, then polished the feed ramp. Ran a full mag of HPs without a jam, which did not happen before modification.
EDIT: What I need is DRA to bring up his JHP up here so I can get a look at his magazines and get some measurements. I bet I can figure out a way.