Picked up a K-Line Dreyfus Hudson 5449 a year and a half ago and want it to sound better and smoke better. Here is a photo of what I have. One board says RS 3.0 ver C, the other has a big K on it "one with copper coil". Both plug into a board in the center. I am totally new to TMCC. Just bought a Cab-1L two weeks ago. Love it with matching MTH cars!!! On my Christmas layout. Can someone help me here? Thanks, Steve