I now have 10 engines in my set and the two from my DCC starter set move slightly when I run my 2-6-6-2.  Are they cheaper decoders or do I have a radio frequency problem?

Thank you.

pjmack

I just put the Louisville & Nashville GP 9 on DCC number 10 and it worked fine until I added a new train on #3.  Now I cant move the #10 train and would like to know how to reset it.  Please note that #10 is not dc used.

Thanks in advance for any help.

PJMack