I just added brakes on top of my bars. My bike's a little long for me (I have long legs and a short torso so it's always a compromise), and this will let me mount/dismount from the tops with a little more confidence. The problem is, I'm having a hard time routing the cables in a way that doesn't seem to pinch them. They have a "less than smooth" feeling when pulling. Ideally I would run the cable from the left brake straight up and though the stem.
If I drilled a small hole all the way through -- how much structural integrity would I lose. I feel like it is worth it, but am not quite ready to sacrifice a stem yet