sent this in for a thermal paste replacement yesterday (unfortunately the service center will not use the ptm7950 I provided for them) because temps were 83C and 110C for hotspots and about 25-30c delta. I knew my gpu was dying and asked the service center to send the picture of the board immediately after the heatsink removal. And there it is, severe pump out with practically no paste left whatsoever in the border areas. almost all of the paste had pumped out. For people using gpus without ptm pads, and either don't care about warranty or the coverage is over, definitely do a repaste.
In my case, if the hotspot temps start rising again I will do a self maintenance and change it to a ptm7950.
Edit: galax has just reported to me that post repaste temps went to 66-67 under load and 78-80 for hotspots. However I do not know if these are results through furmark and I’ll have to do my own tests once it arrives back tomorrow.