Again, you are assuming something that may not be the case (a call maker "fixing" a wallowed out screw hole)
I don't glue my screws into a call, was merely suggesting another reason a call maker might do this, that is to ensure the paddle stays at the optimal position to play, and to keep people who don't know what they are doing from "tinkering" with it (or in the case of high stakes competitions). I would assume that a call maker with a reputation such as Lamar Williams or Darrin Dawkins, if they do in fact glue a screw in, would have a valid reason to do so, other than making a mistake and trying to fix it.