I have a 2013 STS with the oem backrest and the wife finds it to be uncomfortable on her back, I looked at the Can Am parts catalog for a replacement pad that had more cushion but didnt see anything, I saw some online that are made to go on a sissy bar but was not sure if the bolt patterns would line up, I called one vendor I saw online and they didnt know the width between the holes for the screws. Has anyone used an aftermarket backrest pad or got one reupholstered?