I'm having an issue with a N scale USRA Heavy Mountain Loco (DCC) that I purchased a couple of years ago.  I can turn the light on and off using my NCE system.  However, I cannot get the loco to move.  When I try to read back any of the CV's on the programming track it says it cannot read any of them, it can't read the manufacturer, etc.  The only thing I can do is change the address on this loco.  I have changed it to the road number, 1552, light will come on, change back to 3, light will come on, otherwise nothing.

I've tried setting CV 8 to 8, still nothing.  I'd also like to get a list list of the CV's for this decoder.

Any thoughts?