I've run this engine MAYBE a total of 1 hour since I bought it a year ago. I changed the long address without any trouble when I ran it the first time. Yesterday I decided to change the horn - I use an NCE system on my home layout - so I selected Programming on the Main, changed the CV for the horn and now I have sound but no movement of the engine in either direction using the long address or address#3. I tried a factory reset bit still no movement although the engine RPM's increase as I increase the throttle speed.

Anybody out there that can help?