I don't think the boxes will get hot enough to damage any touching wires as long as there is some air flow, even behind the inner panels, but heat is the enemy of electronics. Paid some attention to this because I saw Cyclops puts cooling fins on their reg box.
Last night I heard a fan buzzing noise coming from the right side... Another poster reported the same issue pages ago. Wiggling the wires going into the fan could make it better, or stop the fan all together! I'm going to pop the cover off tonight and check things out. Pretty sure will just need to retain internal wiring from going where it shouldn't.
Checked out a buddy's Cyclops H4's last night they sure are nice. I figured maybe worth $20 more, but then he reminded me they are $65 EACH. Loving the G6, even if there's a bit of fiddling required!