Brake dragging on passenger side,advice/help needed

Yes same deal.when i go to reinstall,push the piston back with one of those twist knob tools install pads and caliper it spins pretty free but as I tighten the holding hardware down it does get harder to spin,is this kinda normal?? Then when i push the brake petal bake up and recheck it is very hard to turn. I did loosen the harware on the driver side and it did not seem to change the amount of effort to spin but I didn't remove anything and start from scratch on that side today