I have an iPad 3rd gen which I bought in September. The home button is not always responsive. I will have to click it really hard for it to "reconfigure" and then for a couple hours it'll work with a simple click. But soon after it will become non responsive to light clicks and will require another hard press. I'm wondering if Apple will replace this. My apple store is about an hour away so I'm afraid i'll drive all that way amd they won't replace it because it isn't completely broken. What should I do?