I just got my two spectrum 2-10-2 locomotives.
I have 18' and 22' radius tracks. One of the loco runs just fine on same track but other one always gets derailed.  Whenever it starts on track the body of loco looks like bends backwords causing front wheels to loose contact with track and when it moves back to original position, front wheels derail. Also the rear wheels loose contacts with track while passing through rail switchers. Can you please help me to resolve this issue as I have been trying to make it work for long time now.

I bought acela train set recently. I found that the trains need lubrication on regular basis but the product doesnt have any kind of documentation in particular for the acela trains about how to do lubrication.
Do anybody has any idea about it?