To: If I had a nickel.
In defense of the Craftsman openers, I have two ten year old openers on my doors that work great! One, on a smaller door, get's the most use as it gets treated as a walkthrough for everything I need to do in the front yard. It must get used 10 times a day! I think one great maintenance idea everyone should do is to disengage the lift and roll the door up and down by hand a few times. The opener should not have to lift the door. That's what the springs are for. In ten years I have adjusted the springs twice to maintain fingertip lifting and closing. Do your doors open and close that easily? If they don't, you are depending on your opener to do a job for which it was never intended.