Hello, my original 1TB Western Digital Scorpio Blue internal crashed, so I replaced it with a new one.. BUT the new one doesn't have the 4 small mounting screws on the side that mount it to the plastic brackets of my 15'' Macbook Pro. (if you are not sure of which screws I'm talking about look at the "IMPORTANT" part of step 6 on these instructions:http://support.apple.com/kb/HT3419 .) Do you know a place online where I can buy these type of screws? Is it too dangerous to put the drive without the screws? Thank you in advance!