I purchased an Atlas MP15 DC a few months ago. I was never completely satisfied with it, it's running but derails randomly on turnouts. I pinpointed the problem as being a truck problem. On one truck, the axles are not horizontal. I took the truck completely apart but couldn't find anything wrong with the individual components: the truck sideframe, wheel sets, gear case and wheel wipers seem OK when checked individually. But that's another story when I put everything together , see the picture. Any suggestion to fix that frustrating problem will be highly appreciated. Tia.