I don't really know much about the openers.Let me ask you are they programed with Dip switches or do they have a roaming code feature? If they came from the factory W/ dip switches.one will have to be changed to the other end of the switch configuration. If they are roaming codes all I can say is the freq of the two maybe to close to each other and/or you have to play with one to get the freq. range away from the other. I wish I could be more helpful...Post back ..