Dealt with that same nonsense before, feels bad.

I used to just drill my own hole whenever I needed one and call it a day, but man, poking around for factory cutouts first is the move. That free grommet behind the kick panel is the kind of thing I wish the manual actually told you about. Saved you way more than an hour of sweating in some attic, honestly.

Same thing happened to my aunt's salon over on Vernor after they swapped her meter. Bill jumped from around 80 bucks to almost 300 and nobody could tell her why at first. Faxing the old bills is what finally did it for her too, so yeah, that step seems to be the magic trick with these folks.