I have an M1KP keypad, that I have been using for some time. Today, I added 2 M1KP2's. I set the keypads to addresses 1, 2, 3. The keypad that was originally 1, is still number 1. For some reason, I cannot get it to work now. The keypad states that it has lost comm. I brought the keypad back to its original spot and it works fine. I tested the wiring for the new keypad, and it is fine. Any ideas why the keypad does not work now? Also, each keypad plugs into an M1DBH. Even when I bypass the wiring to the keypad and go directly to the DBH, it still doesnt work. Any ideas?