So I used the thermal adhesive to permanently stick the memory heatsinks on. Also, as I was planning, i got some 100% copper nails and stuck those on the mosfets as well.
The memory is running significantly cooler, highest temp I measured today was a mere 48.5C. Almost a 20C drop! The mosfets with my homemade cooling are running around 58C so also a significant improvement!
Hopefully with these cooler temps, the card will last for a long time while running Folding@home