Spare time project:
Texture update for John Yelland's GWR signals.
Spot the ones I've not done

there are issues I'm not sure can be got around without editing the models, like the "light" sometimes sitting in front of the arm and the fact I can't seem to persuade the posts to take any texture changes, but one day it'll be a nice little improvement. I'm not claiming any sort of absolute correctness, before someone points out a bolt in the wrong place! although if someone could point me at some nice closeups of arms, I'm not going to complain.
My posts are my opinion, and should be read as such.