[drift into a curb]

Just go with a remanufacture instead of caliper rebuild. If you hone them out incorrectly, you'll run into problems later.

Hmm.. what you could check is... take off the caliper and rotor and check the hub. Clean the hub surface with brake cleaner/acetone and sandpaper/steel brush. Make sure your torque ratings are to specification. If you want to check for a stuck caliper, you can squeeze it to see it compress. Open up the boot and check if it's still nice and greased. You can try resurfacing the rotor after you check everything but it's kinda useless without new pads because your pads are already worn into the rotor.