We had Randy Ersepke of Overhead Garage Door Company install two openers on our sliders and we are very pleased with his work. I spoke with six or seven installers, had 3 come out and chose Randy. He was not inexpensive but he had the cleanest, most polished method. Everyone has their own way of doing it and I wanted the least obtrusive installation. If you want any details or photos, send me a PM and I am happy to provide additional feedback.
Campbell, CA (San Jose area)