Guitars are rarely perfect in this regard nor generally does it matter much. I've only had one guitar where I had to do more than loosen the neck and yank it over. I tapped the nut loose, slid it over a teense, reglued it, and smoothed things up a little. The result was imperfect (nut edges not perfectly aligned) but perfectly functional. I'd probably these days replace the nut, but you never know! The guitar was a Squier Affinity, if it matters.