[DexterII]

Really sorry to hear that, Red; that kind of stuff really ticks me off. With everything properly installed, it is not quite that easy to force a garage door up. But, for added security in my barn, or in the gargae when we are travelling, I dilled holes in the tracks, just over one of the rollers, through which I can insert a U bolt. When not in use, the U bolts hang on a nail next to the door.

 

[DexterII]

Red, I just remembered the other thing that I was going to mention. Modern openers have rolling frequencies, and they will not work until synch'd with the opener itself. Check your manual, but I believe that you will find that you can "cleanse" the opener, so that none of your remotes work, and can then reprogram the remotes that you do have to work, which should render the stolen one useless.