Does AppleCare care if I've modded my machine?
Generally all changes you made yourself are not liked at Apple. They cancel your guarantee. But I don't think I will be an issue other than that. They will probably just replace it. I wouldn't tell them though, that you made these changes, because depending on how nice the person you get to repair your MacBook is, he'll maybe just ignore that you modified it, and maybe you have to pay less.