Originally Posted by
wild style
Yeah, the bullhorns were mounted for about half that time. Switched off between the horns and risers. I don't know exactly when the cracks started, but they're there none the less. Probably going to order a new faceplate from Thomson so I don't end up toothless in the near future.

with any other stem you might try it though i refuse to compromise safety in the least @ the bars/stem.
but really, i wouldn't mess w/ thomson stem:
http://www.bikeforums.net/showthread.php?t=458531