I couldn't see much of anything except the windings look nice.
If it was misrepresented, post that claim. The windings here look ok. The arms too. I couldn't figure the bus bar reference.
Buy 2 extra wheels and 4 extra pins. The wheels are brittle and the rivets/axle bend easily when you set them. They are delicate & if overset, the axle bows. If the axle bows, the roller wont roll as smooth, it might hang up some, or it might not turn at all. (I think if you search 16a post diode you'll find a reference on that.)
A drop every 4 to 6 sections for me.
