Is there a tell all book for DCC? I was led to belive you did not need a lot of block wiring with DCC. Sooo I put only 3 blocks in my mainlines. Hooked up some jumpers to a reg. transformer and away we went. Atlas masters ran great. Hook up Diditrax-runs great. Now the problem. I 'm reading about how to hook up bus bar and feeders and see bus bar should be max.25-30 . My walkaround layout is 135'around. Help!!!!