Very well. The screen was installed in 1968 and I thought it would have to be replaced, which would have cost much more. Nathun and Joe said that the screen replacement and latch replacement would solve the problem. Midway, the old plastic latch broke, so it took longer to find a metal replacement. They tried several solutions before finding the best one. They were polite, knowledgeable, careful and thorough. Being a mobile unit, they could switch the requested service on site with no problem.