My garage door isn't as smooth and quiet as it used to be. Not that it was that quiet in the first place. It uses the chain mechnism, instead of one of those bolt setup.
But now, I often find it to jerky and harsh when I open or close it. There is a sticker on the door left on it by the company which installed it and says to call every year for its annual service.
But was wondering if any of you happen to know what the typical garage door maintenance involves and would like to see if I can do them myself? This is what I have, http://www.garagehowto.com/overhead-door-python-2.html
Any input, suggestions or thoughts would be greatly appreciated on this. Thanks for your time and courtesy.