I just got my corsair VX 550 watt PSU. I took out my cheap okia 400 watt. The corsair is only slightly bigger but I seem unable to get it to fit in the case. There is a metal piece that the okia rested on. I think I can remove this and still be able to mount and safely rest the PSU. I guess this is my only option since I can't force it in anymore, only about a half inch or so. There is a fan in the power source which happens to rest directly above the processor/processor fan. Is that safe?