this is a dangerously informative link for this:
http://www.truetex.com/garage.htm


shoeheel wrote:
My spring just broke on my Wayne Dalton 9000 Series Garage Door.

1) I've had the door less than 5 years. Is it still under warranty?
2) It is a 18 ft. door but only has one spring. Is this normal?
3) Where can I get a manual? The W-D sight does not have one.

Thanks!