With my 15-1994 how do I reset the remote to its factory fresh state? I have done mucho programming but I think I have ways to save memory so I can add more macros and learned events... but I frankly don't want to mess with trying to remove some, keep some... I would rather start completly fresh including entering the product numbers in again. Is this possible, will removing the batteries for an hour do it or as I suspect is there a code...? Thanks!