I recently bought a Hitachi Ultrastar 1TB 3.5" 7200RPM Internal Hard Drive but it seems to have come with a caddy which i dont know much about but seems to not be able to fit into my Sentey CS1-1398 PLUS ATX Mid Tower Case even though according to pcpartpicker.com it says all parts were compatible. Is there a certain way its suppose to go in because it doesnt fit into the bays.