Just out of interest – what kind of a deal?
I have a 5spot with a DHX air shock and I’d really like to change it.
I was told they would eventually need replaced but that they were fine for a while.
I was told mine would continue to work fine and that it was nothing to worry about.
It started on the brake side but now both are worn.
I got the same thing on my RC41’s, though it is far more pronounced. Think it might have something to do with bearings in the lower leg assembly. Though I could be completely wrong.