Some of what fails on a Fennville garage door is fair game for a homeowner with a ladder and patience - tightening loose hinge bolts, lubricating hinges and rollers, clearing a photo-eye sensor that's gotten dusty. What isn't fair game is the torsion spring itself. On a 1970s-era door, that spring is wound under enough tension to break a wrist or worse, and the tools to do it safely aren't the ones sitting in a garage. If your door is sagging on one side, that's often a cable or a bottom bracket, not something to force back into place by hand. We'd rather get a call for something minor than a trip to the ER for something that looked simple.