Ever since I installed my new struts a year ago, I've been hearing some clunking noise coming from the rear right. I've been ignoring it, but now wanna fix it. I didnt think it was the strut since I did the washer trick and i've had no problems with the left side. I removed the rear deck and folded down the seats and went for a drive. Ever time I went over a bump, I could see the strut shaft moving up and down with the washers clunking together. I double checked all the nuts and everthing is as tight as it will get. Anyone have a clue what is going on here? Is it possible for the strut mount to go bad?