Looking at the insides of this MMM reminds me of the good ol days of modding the MM. I actually managed to replace a few of the surface mounted fets on one of my MM's.
We used to pop off the heat sink and sand the fet's perfectly flat, sand away the anodizing on the sink, and use thermal paste and thermal adhesive to hold it all togeather.
I still have my frankenstien MM that never even got warm to the touch...