I was hoping to hear from someone who'd installed the Twisted Industries aluminum mag release button on their P11's. I recently received it and installed it and it doesn't quite fit properly. Initially it was very tight getting it in, and once I got it in, I found that it was so stiff it wouldn't move freely. I could push it in to release the mag, but it would stay pushed in until I pushed it back in from the other side (yes, i did install the spring). Eventually I took it off again and greased it completely before reinserting it. I've been pushing it back and forth a lot to see if it eases up a bit, but it's still pretty stiff. Now it will kind of move but it's not a crisp movement, it's kind of mushy. I can push it in to release the mag but it's pretty stiff, and it will then slowly move back to its original position. Did anyone else who installed it have problems with it? Was it necessary to file down the grip at all? Any input would be appreciated.