Geez, youse guys are a rough audience. Okay - I know that shimming the garage wall would be difficult although it'd probably work to get that hole up to the right altitude. But if "shimming" means to add a little bit (in this case, of height) -- what's the right word for the unshimming that I really need to do?
And anyway, it doesn't matter 'cause you figured out what I meant, right?