I bought one of those 120mm fans (a Sunon) that sits over your expansion slots. However, the tab that allows you to mount it makes it sit too "high" up over the expansion slots...I can't put my case cover on. Anyone else run into this? I'm thinking about just bending it down a little, but I'm thinking about a new case anyway. Anyone have an opinion between the Addtronics 6890 and 6896? Seems to me the front cover on the 6890 wouldn't allow a whole lot of air for the fans to suck in.