Hi all, I just opened up my 2.53ghz mini to install a new 640GB hard drive. It's back up and running fine. When i was taking the casing off though, I left a couple of very small dents/marks on the underside/inside of the metal housing. They are extremely minor and obviously don't affect it's performance, and they're on the base so they're not going to be seen unless you tip it upside down. It's warranty was due to run to January 2011. I was going to purchase applecare nearer the original warranty expiry date. Have I voided my warranty by opening it up myself and/or by leaving marks on it? I'm confident I've not damaged anything inside. Is it still worth me buying applecare or will they not honour it seen as I've opened it up? Any info is appreciated.