Need help with SBP Kelsey-Hayes rotors

Make sure there isn't air trapped inside the dust boots. You can grab the boots with your fingers and pull it away from the pistons and any air that could be expanding the boots will escape. You should be able to see the boots shrink in size if there is any air trapped. The air gets trapped when the pistons were pushed into the calipers. It's worth a try as it wouldn't take much expansion of the boots to rub the rotors.