I had a squeeking coming from my front end (turned out to be a spacer jumpin' around), so I took everything apart. When I removed my Deda Pista bars from my stem, I realized that the back side of the handlebars is slightly deformed from the stem. I don't run my stem paul bunyun/chuck norris/andre the giant tight, just enough to not allow my bars to swing down when I put all my weight on them. Any one else have this problem? I am concerned because they are aluminum bars and I don't want them breaking on me. I'll try to put up pictures tonight.