So while mini fans are out of the question, with PGS mod was able to get my computer completely stable in 10 minutes of OCCT + Heaven with the PCH never going about 78.5C. .15 undervolt and the PGS is about 4 layers thick to get there. So the good news is no permanent cutting or other more invasive mods are necessary to achieve absolute stability.
I've never got the problem fixed. I just got a mini USB wifi plug from Newegg. I hardly notice its there and I get good signal