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Old 07-25-09, 04:53 PM
  #9  
DannoXYZ 
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It appears from the photos (4th) that the narrowest part of the stem is right under the clamp bolt. Just rotate the stem so that this part is on the inside (tightest) curve part of the bars and it'll slide off easily.

It appears that this stem was forced apart to fit a larger bar than the stem was designed for. In which case, it most likely cut some gouges into the bar at the edges of the clamp which prevented it from sliding out easily. The forced-apart clamp also means it won't be as easily spread apart even more to release the bar. The clamp should have its mating faces at the clamp parallel, not angled outwards like in the last photo.

Also would be a good idea to polish the inside of the clamp down to a 400 AR finish. The ragged rough surface you have now is ripe for introducing cracks. Also deburr the edge of the clamp so you don't introduce stress-riser scratches into your new bar. TTT stems are typically 26.0 or 26.2mm, make sure your new bar is the correct size.
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