Thanks for the clarification.
A few years back, I posted a thread about a #370 AF Geep; since I'm not a fan of "traction tires/pul mor" (a throw back to my N scale days), I went about removing the plastic "pul mor" wheels and replaced them with plain metal ones. 2 reasons: 1; I thought that having an additional wheel providing electrical pick up is always a good thing, and 2; well, I just don't like the idea of them. 🙂
It seems to run and pull just fine without them. And FWIW, I did a similar exchange on a couple of 3R Lionel O gauge steam engines... with the same results...does this make me a bad person? 😁
Mark in Oregon