Hi, I'm just wondering how others have rack mounted their x3 Pro units. I've just got hold of one in a 4U gator rack bag with a 1U power amp and with the x3 mounted in the top (which is the obvious place for is to go) the air vent is blocked. As I have use the all 4U in the rack bag, there doesn't seem to be a way to avoid blocking the air vent on the top of the x3. Should I worry about this, or is over heating not a problem?