Can't install Cryorig h7

[RobyRc]

Hi!
I just bought thr cryorig h7 but i can't get it to install properly.
I got to the part of screwing in the screws but i can only screw 3.. The last one isn't making contact and it's driving me crazy..i tried 8 times,2 thermal paste tubs..

 

[Benjiwenji]

loosen them and gradually tighten them in a corner to corner criss cross pattern. Don't tighten anyone all the way in a single setting. There are videos on that.