I have a wood block wedged between my car's battery and battery mount because the new battery was smaller and I couldn't get the mount to adjust down. I cringe whenever I get the oil done but I don't fix it because it is good enough. I do feel dirty about it and every other weekend I think, "I should install a proper sized mount." But the battery doesn't wiggle. It works. It is a temp fix that has been there half a year. Code is even less visible to most, so even more out of sight and out of mind.