Hello,
I have both of the Line59 Rlmmps 650 & 651 sets. On a QD consist I was doing today I noticed that the flat cars on the 651 ((not the 650) set were staying on the tracks but randomly bouncing up and down. Can someone please tell me what would cause this? and how would I fix this issue? The first thing that came to mind was a bounding box problem but I don't know enough about it.
regards Thomas