Because needs pics.

After a wire brush-




Then sandpaper by hand and a drum on the dremel, gently. Hub seated easily and fully now, as it should be. Squeaking seems to be gone. Once the caliper was off I put the wheel back on and yep it was pretty loose. Sometimes even a blind squirrel gets a nut. By the way, a 4mm allen wrench worked great on those torx screws around back for the park brake bracket.