By the way, I'm beginning to become a little suspicious as to what is causing the mid-valve to "wear-out". I possibly could argue that the mid-valve itself is not the problem, but that it's just extremely sensitive to the quality-state of the oil. As is the seal head assembly. Mainly that when I have lost sizable amounts of compression, that fresh fork oil seemed to resolve it. I've done the flip-the-shims approach as well, but never without new oil. This has also contributed to my bias towards the longevity of certain lower grade oils. Any additions to this theory would be helpful. DaveJ Okay – I’ll shut up now.