OK I finally got sick of riding the edge of thermaling my quark all the time so I designed up a simple heat sink that mounts to the motor mount bracket of either the stock emaxx transmission or the gmaxx motor mount. I designed it in solidworks and had the shop at work machine it up for me in one of the cnc mills. Its flat on one side for mounting to the flat back of the quark and has radiator fins and screw holes for mounting (2) 5V 40mm fans. I mounted the quark to it using the termal paste they use for computer chips.
Hope this works....
Heres a few pics.
The mount by itself:
With 2 fans mounted:
Mounted up in my e-revo with the quark:
