I bought a Galfer wave rotor for the rear of my XR650R and it didn't come with any hardware. When I try to use the stock bolts, they are too small for the hole diameter. I checked fastener sites like McMaster-Carr and I can't find anything that would work. Has anyone else used one of these before? Did I just get the wrong one, because the ID of the rotor is correct, but the OD looks a bit small when you compare it to the stock one.