I have craftsman opener model #139.536745SRT2.standard control console.With 2 remotes.I can only program one remote to work.I reset system by holding in learn button.until system resets.I can then program one remote to work, but cannot program second remote.when I push large button on second remote I get no response on opener unit.I can reset system and get either remote to work alone but can not ever program second remote.They were working until I reset system when trying to get outside cypher lock to work.Any ideas?