Hiya, I've had them for two years and used them for a ride up the road and back, as I had project 2's on my explosif and these have just been completing the build on the cindercone, which I've used just the once.
I've never put air in them, and they bounce up and down without noise or complaint, no marks on the gold legs, they had rubber seals when I got them and I cut them off. Looking at them they do seem to have a very very small sign of oil on one of the rubber seals and I mean tiny, but not sure if this is lack of use or because they need attention, I've bounced up and down and they havnt got any worse or made any sounds??
They have a small amount of decal scratches and a a little scratch here and there but really amazing condition , they were originally removed from a king kikapu iirc.
They have been indoors for the whole time, if that makes a difference?
Hope that helps
Dave