I received and installed an Old Man Mountain Sherpa rack yesterday. The only glitch encountered was the brake boss mount. My brake bosses are unused and have empty threaded holes where the brakes would normally mount. The Old Man Mountain came with several mounting screws, but the diameter of the screws is much smaller than the diameter of the boss holes.
Anyone know offhand what's the screw size that would normally fit into the brake boss holes? I'll pick up a couple of screws at Ace, no problem if I know what size.
In the meantime the rack is mounted on the seat stays with P clamps (included). But the setup would look nicer mounted to the bosses, and the shifter cable rubs on the P clamp.