I have an NCE power cab dcc system. I am trying to program a 4 digit address into a new atlas C630 n scale loco with a factory installed lenz le062xf decoder. I am programing on the main and have rocked it off the track to disconnect the power, but the address stays at 03. The engine also will not begin to run until I reach 12 to 14 of 28 speed steps and it runs jerky until it has run for a few minutes. May need breaking in period or has bad electrical pickup ? Any suggestions ?