You are right:
                    New Bachmann loco had OIL on the WHEELS, making a poor contact to the track. Cleaned the wheels, and the 1 Kohm resistor gets it programmed 100 %.
                                              Thanks ........
             

Thanks Hunt:
       Tried a 1Kohm resistor and it worked on the 2nd try. Was still getting open track error half the times I tried it. Went to a 220 ohm resistor, works 100 % and does not seem to take too much current.
                                                 
                                                 Thanks again; John 8th of OSRR

I have some DCC EQUIPPED LOCO's and want to change the LOCO address using a Digitrax DCS 50 (ZEPHYR). Is there a easy way to do this ? Do Bachmann decoders have a address lock ? What MODE of programming is used to reprogram the decoder ?
                                                 John 8