The metal grid on the face of my X2 has become slightly bent inward and is rubbing up against the fan blades when in operation. I think all I need to do to fix it is to open up the case and apply some outward pressure on the grid to bend it ever so slightly away from the fan blades. Should be easy as pie.... except after removing the obvious eight phillips screws from the backside, the X2 seems to be as firmly held together as ever. I'm stumped. Does anybody know what the key to opening this thing up is? Thanks.