Walther's came through today.
Parts are in and I will have to remove the worm gear to installl the new 5 pole armature.Moan . One plan is to push the armature shaft out. With a yardsale mic. I measured about 40/ 1000th Guess what? a paper clip is slightly less. I have the chassis structure on the other side if I pull. Chassis obstructs the access to the lower armature. Not good.
So the engine is stripped found some corrosion on one axle. The old motor is dead. It didn't work without a load, (axles removed). The worm gear is sharp.
I did take some Pic,s, but no time today. I used tweezers and my smalllest precision screwdriver for disassembly. Copper contacts could use a cleaning.
You should of seen the size of the shipping box.
I don't know, as I've never really been interested in it. I'm only repeating what I was told, and therefore happy to be proven wrong.What's less prototypical about N-scale over Z-scale?