My parents garage door was not closing, replaced the battery in the remotes, had to hold the remote button to shut the door down. They had the door since the late 70s . I called them and they came out that afternoon,there was a bag that was blocking the sensor! I checked everything around the doors , I felt stupid, but Andrew Brown was great, he checked over the door and and said it was a good shape so we placed the rollers. Now it opens up quite! Thank you for the good service!