Contour Enthusiasts Group Archives Forums Modifications Suspension Problems w/ suspension and I'm confused

Well I'm puzzled again. I have a sever clunk in the rear end when I go over little quick bumps and not so much on bigger ones. At first I thought it was something loose from my Rear Disc Conversion, but I crawled under there tonight and everything is tight as shiet. HOWEVER I grabbed on to my Roush sway bar and just pushed on it and it jiggles and makes the same clunk as what I'm hearing so I tightened them up as hard as I can and its still got like 1-3mm of slack it apprears the bushing is worn out! Can this be? Its the 22mm Roush bar with poly bushings and 34K, I didn't think they would wear out.

Anyway ok if they are worn what should I do? I don't think Roush makes these anymore and its a oddball size of 22mm. Bat sells 21mm and of course Terry has the 24mm. Do I need a new bar or will the 21mm bushings just makes things tighter and therefore better? Any advice will really be appreciated since this still blows my mind. Thank you!