Contour Enthusiasts Group Archives Forums Modifications Suspension noise/clunk in rear?

i have H&R springs/bilstein struts. lately i have been hearing a clunk if you will on the right side rear. i have checked sway bar bushings(they are new energy suspentions by the way)it is tight. i have checked contro arms all tight. i have read a simular post a while back but could not find it. i was thinking the sway bar end links might be worn. it only does it at slow speeds, high speed it is fine. and it does not do it all the time. any ideas. i just put 1ook miles on it also.