I'm trying to install 2 80mm case fans in my case one in the front and one the back. I just want to make sure that I'm doing this right. The rear fan seems easy just screw it in throuhg the back, but is there anything else I should be using any other kind of mounting stuff I need, or will the screws be enough to hold the fan securely in place? The front however looks like I have to take off the front face of the case to be able to screw in the fan. Is this correct? Or should I be using a fan mount instead? Thanks for your input.