The screen on my g4 iBook has somehow sunken down and to the left (and twisted very slightly). Although this is a refurb, and only 3 months old - the genius bar won't agree to fix it. Is it a matter of just straightening out a bar within the hinge? If it is, can I just offer to pay for it to be straightened? I have anxiety, so I'm constantly sick over the fact that the screen isn't straight - it really needs to be fixed.