I have an early 90's Proflex 753 Generation 4 with the yellow elastomer rear suspension and a Rock Shox hydra front.
My yellow elastomer in the rear is hard as a rock and has shrunk also judging by the 1/2 inch play in it.
I am looking for anything out there either elastomer or springs that I can retrofit to fix my suspension.
I have an inquiry with Rapid Descent out of scotland that sells parts for the later models but nothing for my vintage that I can tell from there website.
If I can't find anything I may just put in a big washer to lock it out and make it a hard tail.