Apparently the DMCH (Black) Spax production run and (Later production Yellow from Other vendors) come with Improved Washers. Since I don't have a DMCH set so I can't verify it. (I would like to see a photo comparison to see the difference though) ANYBODY?. A few of the washer failures started to crop up in the first year that these sets were offered. The Limited miles driven and varying road conditions can spread the failures out over a long time. After It was determined the failures were becoming more than random, Spax was contacted and a fix was prescribed (heavier washers) imagine that! Supposedly a Warranty (replacement kit) was made available and could be acquired by contacting your VENDOR. In my case the UK delorean club. But as I said, the replacement kit did not appear to have heavier washers. So I did my own fix. On mine the bushing hole has a slight Smilie Notch worn in it but not significant enough for me to worry about it. The shock rod also developed a thinned (Necked down) wear spot from floating. Probably .060" on one side (about .5 inch long). Since this is in an otherwise static location I don't worry about it.
The Hervey shocks are probably still be part of the earlier Production runs. He was the first vendor to sell them Stateside. It's hard to now how many sets he brought in at the beginning. He may still be selling old inventory. I can't imagine him not being aware of the issue though.
The thing that has surprised me was that I was NOT contacted about a the issue and a fix being made available. ( this is a safety Recall type issue) and all purchasers should have been contacted IMO. Not like they don't have the sales records and email contact info.

