I'd use Paul Brinkman and his assistant again without hesitation. They came out the same day, rescued our cars from the garage in seconds and were all done with their recommended work in a little over two hours. I was worried that they'd want to replace more than was really necessary but they gave us three options and even the most expensive one was clearly, in my entirely unqualified opinion, warranted. They replaced both springs, the roller they were on and the associated pulleys and cables, along with the pins and bearings between the door and its track, then tightened and lubricated everything. It was more expensive than I'd imagined but not eye-wateringly so and the components used were visibly upgrades. If the replacement lasts just ten years, a third as long as what it replaced, the cost will amortize to peanuts.