ok so my macbook air hinge made a cracking noise while my sister as using it. it is still in warranty and they do not want to fix it because there is a little nitch one inch away from the hinge. and say that damage impacted the macbook air and that is why the hinge broke. they want to charge me 750 dollars. that scratch has been there since i got the macbook air. but they wouldn't believe me! now i am going to go to another apple store, should i tell them that the dent accrued after the hinge broke? should i tell them that i was trying to fix the hinge with a screwdriver and it slipped and hit the corner.? i know i would be lying but i just need this hinge fixed! i really dont have easy access to a apple store so if i go again to another one i really dont want to come back disappointed. thanks guys