Well I did the swap as outlined in the link I posted above.  Only a partial success, dropped about 6-8C while mining. (no this a gaming card, not a mining card)  Only thing maybe I could have done better is a little more paste between the copper plate and the block.  I put a thin layer but then wondered how well it really fits after I got it back together.  I did use Kryonaut Extreme there also though.  My temps are actually close to the reported # above in the link, so maybe my card/kit started out a bit better too.  92C with 26C ambient vs the 88 reported above.
 
So better than nothing but not amazing.  Core temp is slightly lower (1-2C) probably due to using Kryonaut Extreme rather than MX-4 this time.  So that's good news.  The harder Gelid Ultimate's didn't hurt core contact pressure apparently.  I still think that's because they are on the thin side (2mm vs 2.25mm).  Link above suggests 2.5mm Extreme's are worse, but I kinda wonder...