If you have an older garage, you might want to check the door spring's AND the hook's they're attached to. One of mine broke a couple of week's ago, and I found the spring on top of my hood
. Luckily I had a cover on it, and there are only some small mark's in the paint. I hope they'll buff out.
Found the broken hook, but still looking for the eye-end of the spring that broke. Sure do have a lot of open boxes, bucket's, shelve's, etc in the garage a bouncing part could find to disappear in!!!!
