Hello, I bought my FTW2 back in 2017 and have never replaced the thermal paste.  Recently over the last couple of months I have noticed higher idle temps around ~50C (not terrible I know) but I know the card previously had temps around the high 30s at idle.  I have had the card now for about 5 years and so I figured it was about time I open it up replace the thermal paste.  Unfortunately I'm unable to find a guide on how to open the card up.  I have never disassembled the card before so was wondering if anyone have any tips or instructions to help?  The stickied guide does not seem to be all too helpful in my case as my card has an ICX cooler vs ACX in the guide.  I took all the screws off the backplate but I notice that there are these spring screws (pics attached) and am unable to take them off.  It seems to be able to reach them I would have to disassemble the front assembly as well but I figured I would ask before getting too risky with things.
 
EDIT: Sorry first time posting here so it seems like I cannot post a url or pics.

Yes that is the correct part number unfortunately the video was not helpful as that card uses a different cooler from the card I have.  Fortunately I did manage to figure out the issue though!  So on this specific card there are 4 spring screws on the corners of the card that are inaccessible unless you take the fan shroud off.  I was able to find an ifixit guide that showed how to take the fan shroud off and be able to access these screws.  It involved unscrewing the middle 4 hex/allen screws (need a 1.5mm hex key, 2 screws on each side).  The I/O shield also had to be unscrewed to be able to remove the fan shroud.  After unscrewing the 4 spring screws underneath the fan shroud (in addition to the 4 spring screws on the backplate) the heat sink separated from the PCB and I was able to replace the thermal paste. This was my first time opening up a GPU and replacing the thermal paste so it was pretty nerve wracking doing it without too much guidance but everything turned out well!  I wish I could include pictures for anybody who could run into the issue in the future but again I cannot because of my post count.
 
PS: Idle temps are now running 35C!  Last night with the old thermal paste it was running 51C idle!  As I said, I've had the card for about 4.5 years now.  The old thermal paste was looking quite scant when I opened up the GPU.  For future reference I'll probably change the thermal paste every 1-2 years from now on.