Help. I have a digitrax super empite builder. I followed the manual on how to select and run a dcc loco. On page 15 it had me put in the default 03, that I did and it worked. along with putting a dc loco on 00. So now I want to program in the dcc loco number of 340. But no luck. I'm not understanding how to put the number in. What am I missing. I need some help or can someone point me to the right page in the manual. I'm new to dcc so this is a learning curve. Loco is p2k sd-9 HO scale. Help