I was 99% decided on sending the shock to a pro, then decided to just dig in & see. It's only a shock, worst case scen..... The suspected urethane extension bumper was the culprit, it disintegrated and there was shit all jammed up in the piston/valves. The extension stopper set-up is retarded looking, no wonder it beat the shit out of the urethane bumper. It looks like a piece of PVC pipe floating between the valve & bumper so it doesn't contact the whole bumper. I'll take some pics or maybe do a video, too hard to describe.