Thanks, I did try some heat conductive grease back some time ago. Now I'm trying the opposite - standing it off from the panel base somewhat to try to get some air flow behind it. My thought was that the base of the VR is mostly, I assume non-heat conductive, potting compound of some sort and the only heat conduction from the base is through the fairly thin metal edge surrounding the potting compound. Don't know if that makes sense or not. Neither mounting method seemed to have much affect on the heat dispersion.
