Spent some time looking at various options for freight car trucks & wheelsets. I am early into an organized examination. What has become clear is that things vary from soup to junk as far as trucks & wheelset compatibility. I suspect some of it stems from the eleven different axle lengths. Before I make any rash conclusions, I wondered what is done with these cars to “tune” the trucks. It is clear that the used cars that I recently acquired had not been tuned. In fact they hardly would roll in most cases. So far the MTL replacement trucks are head an shoulders above any of the others including Atlas. That surprised me. I wonder if there are generations of Atlas trucks? Have yet to see a Kato truck, but that may change soon. So what is the “best” practice to get your freight cars to roll easily?