On the Zone 2 door and the other doors that are giving you problems, what is between the sensors and the console? Specificaly, are there interior or exterior walls between the sensors and the console. I have been having problems with one of my sensors that is no more than 10 to 15 feet from the console. Due to the layout of my house, the signal from this sensor has to penetrate two exterior walls to get to the console. I open and close the door, and the led flashes, but no chime from the console. If I touch the side of the sensor (I make a good passive antenna) while opening and closing the door, the console chimes. Time to cut up a coat hanger for a permanent passive antenna. I think the wire mesh holding the stucco exterior is blocking the signal. Just sharing this experience in case your problem is similar.