In my Thermal take Tsunami, after I remove the hdd cages, there is still a little platform on the very bottom of the case. Not sure if this is an extra hdd holder or what, but I cannot put in my heater core if it won't come out. That means I just might have to buy a Lian Li v1200 or v2000 . I am guessing they are held in place by rivets, how would I remove those?