I've got a 2010 base quad and all the HD bays are full, so I got the OWC hard drive bracket for the lower optical bay and when I powered it up it got a lot noisier! So I took it out and tightened up all the screws but it made no difference. Then I just took it out altogether and the noise went away. Is having a HDD in the lower optical bay going to be noisier or did I do something wrong? The HDD I'm using is a 1TB WD Caviar Black. Three of the four bays have the same 1TB Caviar Blacks and aren't nearly as noisy as putting it in the optical bay.