I've recently fitted a pair of Rebas after riding rigid for a few years. The damper leg has an O ring fitted, which is great for checking sag. However as it moves up the leg with compression it collects lub. left on the leg from the seals and also collect dust and muck. Since I've been riding some dusty, stoney terrain this accumulating paste has the danger of becoming somewhat abrasive; I'm wondering whether this might ultimately damage the stanchions.
Do people leave their O rings fitted or is there any wisdom in removing them?