Hey, new to this forum, but I have an N-scale layout using a MRC Prodigy Advance controller. I have one locomotive (Broadway Limited Imports N 3869 P3 NW2 Diesel Locomotive, Southern Pacific #1424 (Equipped with Paragon3 Sound/DC/DCC with Rolling Thunder) that I can read on the programming track, but I can't seem to program any of the CV including changing the address. It reads as address 3, but I'm trying to change it to 103! It seems to be taking to changing the address, as it nudges after setting the address on the program track. But when I put it on the main track, enter address 103, nothing happens. If I read it again, back on the program track, the address comes up as 3 again! Any suggestions, I think I have tried just about everything in my limited knowledge.