I've got some lights from Revolution, but having difficultly mounting the front one. The bars have an oversize centre section (which is covered by the stem clamp), then tapers over the course of maybe two inches where it meets the bar tape.
I can't mount it on the taper because it won't sit securely, the bar tape is too thick for it to sit over that, and the clamp cannot be turned 90 degree, so it can't go on the stem.
Is it possible to buy an internally-tapered shim that will give the handlebar section a uniform thickness? Any other solution?