I did and after reinstalling my NB and SB temps went up. Asus uses a thermal pad under both heat sinks, it's about a millimeter thick (fragile, soft and rubbery; seems to be made of silicon). If you could find a similar, but higher quality, thermal pad then it might be worth it. The NB heatsink screws down but the SB heatsink just uses pins and there isn't enough force on it to make tight connection just using thermal grease. I thought about thermal adhesive but I wanted to make sure that if I decided to take them off again I could. I ended up reapplying AS5 and tightly screwing down the NB sink (so much so that the board has a slight bow to it) Temps really aren't any better than the were originally and I bought a Antec Spot Cool to direct air toward it. I'm still looking for a high quality thermal pad, something with adhesive on both sides would be best. Long story short, unless you have a thermal pad to replace the one that's on there I would say that it's not worth it. The problem I found was that most of the high quality pads were only available for industrial use, I couldn't find anyone that sold to end users.