After being out of the hobby for over 15 years; (had to bring up 3 sons) I decided to get back in the hobby. Someone asked me if I was going DCC. What is DCC I asked; never heard of that. After lots of reading I decided without a doubt this is the way to go. Purchased some engines; some decoders, and a DCC unit and away I went. Had to get my teenage son to help me install the decoders. Funny how kids are better at electronics than us old geezers. Then the frustration started. Seems like nothing seemed to ever work right. A friend of mine switched his layout ( one of the largest in eastern Canada) to DCC and he had the same problem. You just want to get out of the hobby. Then I started cleaning the track and the loco wheels. What a difference. Now everything works perfect. I had 2 CP FP7's and the passenger cars sitting on a shelf for over 15 years. I just installed sound to this and what a sight to see this running around my layout with sound. Who would have thought that 15 years ago. So if your new to DCC clean that track and those loco wheels and enjoy!!!