Intercooler hose touching fan blades at the back of the pc case. I was thinking that I can make a metal grill to cover the fan but I worry that the metal may cause a problem as it will be near the motherboard (staticly charged or something). I was also thinking of using a few washers to elevate the grill off the fan blades. Would this work or will the metal grill cause some sort of problem being inside the case?