I am using a CC BEC. I won't risk running a quark 125 at any voltage withough one. They're hot enough as it is. I'll look into some 30w for the center. It does seem the front is unloading a bit too much for my taste. I'm sure that could result in some extra heat. It does indeed seem to be "hot all over". Not like the thermal transfer pad inside has failed or something. The case is hot enough, but it's much hotter on the PCB where the motor wires are soldered in.

J.