Noticed some creeeking from my 2011 TCR SL. I removed the stem, and spacers, and noticed a vetical crack right below where the plug ends in the steerer, the crack is on the outside of the steerer. I then noticed another vertical hairline crack forming right above where the top of the plug sits. The steerer is noticeably bulging where the plug is. You can feel it if you run you fingers down the steerer, more noticeable when you try and slide a spacer down the tube, you have to nudge it past the bulge. Is this normal? Can plugs cause bulges in carbon? I use a torque wrench on my stem so I know its not cracked from over tightening. I just got this frame set from Giant under warranty, so its less than four months old.