I think he saying the holes in k frame are bigger then tapered shoulders on bolts so bolts don't locate k frame prior to tightening. So as he removes replaces k frame the k frame is not located consistently. K frame in my car it does not move once the bolt's tapered shoulders are through k frame holes.
correct once its on the shoulders there is a small amount of movement. Obviously once tightened there is nothing. That would be worrying lol. Just means lack of consistency if taking in and out