It's hard to judge from the pics. Is the heat sink taller than everything on the board? Can't tell if it clears the inductors or not.

I was thinking you could get a finely finned heat sink and use a thermally conductive epoxy to attach it to the existing sink. Something like: http://www.arcticsilver.com/arctic_silver_thermal_adhesive.htm


Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris