Hey Terry, thanks for the info about the Micro Mark truck adjuster. I didn't know they made such a thing. I think that before I add any more locomotives or rolling stock to my roster, I will work on maintaining what I already have. I can now add the truck adjuster to my list of must-haves, which includes gear lube, a coupler height gauge, and a track/wheel gauge. Hopefully these will help smooth things out. Thanks, Pat