Okay so I decided to upgrade my brakes to disc. I ordered what I needed from Brothers. They sent the kit which looked ok. I followed the video and stumbled a little but all ok. When I tried to assemble the caliper with brake pads installed and they won’t fit the disc. I questioned my assembly of the hub etc. I could find nothing I did wrong. I then measured the width of the unassembled disc 31.5 mm (the other wheel) and space between the caliper pads-33.5 mm obviously the spacing is too narrow to fit the disc. Any ideas to make this right? Thanks.