Hi, I recently had to remove my custom SSD from my mac to bring it to the Apple Store so some work could be done on it. Now, I am having trouble unscrewing the bolts in order to take the case off. 2/10 of the screws came out but there are still 8 that won't budge. I believe that these 8 are stripped as my screwdriver seems not to be turning them at all. How would I get about opening the case, replacing the SSD, and putting the screws back in? Thanks!