Guys, I wired up my first decoder last night (NCE D13SR just wires, no plug) and on DC it seems to have a mind of it's own. It runs fine, and speeds up, and slows down, and stops, and starts, just like regular DC, however, every now and then it just flips into reverse, and TOOT.... off the loco goes in the opposite direction, as the same speed as forward). It appears to do this randomly, and at no specific points on the layout. Taking the DC controller back to stopped, and then moving it off again (same direction as far as the controller is concerned), and the loco will then go in the direction it is supposed to. I never really left it long enough (after it auto-reversed) to see if it would auto-change-direction again. It would do this once every 4 - 6 circuits of the layout, and randon spots around the layout. Any ideas? Can't answer how it runs on DCC, cause my new DCC power supply (when I opened the box last night) don't have any power come out of it. Gotta return it.