I put a Ghost Rocket connector and spring kit in my G17 last night. This is not the first one I've done, and it went in OK, no post travel to speak of, but when I finished, the trigger safety would not reliably engage. If I pulled the trigger back to check the pre travel , the trigger would not move forward enough to let the trigger safety engage. Needless to say, the stock connector is back in, but with the Ghost spring kit. It works fine with that setup. I couldn't find any binding, but something is keeping the trigger from returning to its full forward position. Any ideas?