Has anyone added a second fan to the Thermaltake Sonic Tower? I currently have one Link Depot 120mm fan on there. It seems like the air just got dispearsed in the middle, it doesn't penetrate through the other side's tower. I was to add another 120mm fan in the middle, but the Link Depot fan that I current use is too thick. Are there a thinner but still high flow (80cfm or higher) fan that will fit in the middle? Thanks.