The sears garage door opener in this 7 year old house we just bought does not have any saftey mechanism to prevent closing on things. Recently one of our metal garage cans was in the way and I watched the door almost rip itself apart on closing.
Anyway, after dis/assembling and straightening all of the bent parts it looks good but it still has about 1" more to close, else it will let snow and rain in.
My question is, where do I look for the travel adjustment? There's a spring in line with the chain that I played with only to find that it's the chain tensioner. There's a pair of lapped metal arms or bars bolted together that have offset holes in them, but changing the offset would change the travel way over 1". Where do I look for the fine adjustment?
PS. I can easily get the door all the way down manually. There's nothing blocking.
--zeb