I'm building a 1911 for my son for his graduation from the US Naval Academy in May. I have it pretty much done except for sight installation, engraving and cerakote finish. A couple of issues that I am having: (1) It has a Wilson Combat Bulletproof slide release. The slide release won't release on an empty magazine. With no mag in, it works fine. I swapped the slide release from my Kimber Warrior and it works fine. I assume it's just a matter of sanding/filing away a bit of material and it'll work as intended? I can't really tell from where. (2) I test fired it yesterday. Had about 5 failure to feeds (out of 4 magazines) and a couple of times it didn't go into full battery. All the parts on the pistol are Wilson Combat using a Caspian Recon Receiver and a unmarked Remington slide. I used Wilson Combat Elite Tactical mags and Kimber KimPro Tac-Mags. I'm using the Wilson Combat Full-size Shok-Buff Recoil System (Full length guide rod etc...). No idea why it's failing to feed or at times no going into full battery. I assume the slide stop could possibly be a cause of some of this. This is my first 1911 build. Any advice or direction would be greatly appreciated.