I have about 300 yards of Atlas track only two problems so far cleaning. I now have that figured out. Having problems with my Atlas switches now though. I'm thinking that it revolves around power though.
You should post a new thread about the problems you are having. There are a lot of folks here with a good knowledge of Atlas switches and their operation. Also try a search on Atlas switches or 6924 boards. I asked about the 6924's a while back and got a lot of info about switch wiring, power to the switch rails, diverting rails etc. You may not need the 6924 boards, but a lot of other good info is there too. There's a lot of good info and very knowledgeable folks around here on Atlas stuff, and a lot of other stuff too. If I could just remember half the info and tips I read around here, I'd be a model railroad expert! (Poor memory leaves me way off the mark on that idea though.)