I have corrected the "clanking" sound from my PSS9s. They were originally installed 1 3/4" lower than stock, too low for my taste for the street. The right rear also "clanked" when unloaded over bumps, the right rear also did that occasionally. I recently cranked up the height a little to gain more road clearance, and the clanking totally stopped. At the maximum lowered level (1 3/4" below stock in my case) I think the springs separated from the upper strut mount when they were unloaded (over certain bumps). Now they don't. If anyone else had that problem, try raising the rear height a little. I re-aligned after I adjusted the ride height keeping as much negative camber as I could. I will have to look at the sheets to see what camber I ended up with, I think 1.75 degrees negative at the rear and the front somewhat less.

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Charles (arcticsilver)

MotorSport VOS, Mantis sump extension, Quaife TBD, GT3 lower arms, PSS9s, Tarett sways, SRP, Capristo, Hayden OC-1676 power steering cooler.