Like the title says, I
installed an E2 grip kit over the weekend.
Other than swapping out the hammer strut for the one included in the kit, I didn't make any changes to the internals; the decocking lever included with the kit wouldn't decock, so I left the original in.
I had three different magazines with me, and all of them failed to lock back on empty; before I switched grips, I didn't have any problems. I can try other magazines, but since they worked fine before, I'm thinking I may have screwed something up while installing the grip kit.
I can take more pictures of the internals later (but probably not until late tonight or tomorrow) if that would help.