VSTOCK4481, Happy Belated Birthday! I just had one on 3/29, so I've been buying parts :)
In a jam, you could prob cut apart a bud light box (or a manila file folder) and use the thin layer of cardboard to elevate your drives so that they have the same elevation that the caddy provides. A better solution might be to use cut out a piece of tin, to slide underneath the drive, as it would have a better heat transfer coefficient than the cardboard. Just be sure that you have some sort of handle (electrical tape?) that will help you pull the drive out. Or maybe you can get creative and drill some holes in some old PCI expansion slot covers and use them. You don't wanna have to place your hands over three of the slots and have to pick the entire unit up and physically *shake the drives out* onto your bed and make your girlfriend ask if you've gone out to lunch. At least that was the case with me YMMV.
Would you like me to snap some high-rez pictures of 
one of my caddys for you? 