Hey, guys...here's a question I can not find an answer to anywhere.  I have 14 J Class locomotives on my layout.  The track radius is correct for this model, but the front trucks are a pain in the butt because they continually derail on some of the curves.  My question:  is there some way to add weight to the front trucks so that they will lay a little heavier on the tracks?

I am such a newbie to the world of N gauge model railroading.  I am just getting started on  my layout which will reflect the city of Chattanooga, TN and the surrounding are during the 1950-60's.  I have several older Bachman steam locos that I would like to convert to DCC.  Does anyone have information as to how to do this for the standard Northern 4-8-4?
Also have a Norfolk and Western Class J that I would like to convert.

Thanks