Hi, Tonight I noticed that the top exhaust fan is actually sucking air in. When I remove the side panel it blows out, like it should. I have added an Antec 3 speed 120mm case fan , identical to the ones installed in the front of the 902, in the side panel. [h=1][/h]Have I created an unbalance in the air pressure and this is causing the top fan to intake rather than exhaust? Im kind of lost here , any ideas would be appreciated. Thanks in advance!