Sounds like either a shear pin is missing/damaged, or maybe the springs weren't installed correctly. Eric might be right on the shims being left in, but that would probably cause it not to release when it should. I have one in my Sammi, and the only time I get clunks is cornering. Getting on and off the throttle sometimes makes the nose twitch a little, but when driving down the road in a straight line I get no clunks and it tracks fine.