Rui S
Hi, Kevin, Glad I've helped in some way 🙂
In some photos of the bogies you can also see bare metal in the wheels between the torsion bar (I think is the name?) because of the close proximity and the rubble and debris stuck between them. So 4 wheels on each side SOMETIMES also show very bright steel in there sides.😎
I can find some Photo evidence showing that, if you need it😉

PS. WOW, I thought you where speaking of the drive sprocket teeth 🤔 Sorry. But that's it mate. 👍 Did you take a look at the plate and photo I posted?

Kevin Johnson
Whoops, I meant 'road wheel rims' 😄