yeah, i did that, i crossed puched them.
When i got one to click, i tried the opposite side, and it pretty much wont budge, so i kinda of have to force it in (not that much force).
Took me like 30 minutes to install it. after i got the opposite, i crossed pushed the others, and i kind of heard clicks, but they werent as loud as the first one.
But after i got all 4 in, i pushed on all 4 again to see if its fitted in correctly, after, i tried moving it a little to see if it moves, and it didnt, then i just pushed on the pins again for safety.
I am not sure if it worked or not.
I would get the S963 and the retention bracket, but it totals $43 with shipping. which kind of sucks, so i am trying to sell my vendetta 2 to get money, and so far it seems like nobody is interested.
I will run Prime95 when i get home for about an hour, and report back.
EDIT - Okay, i ran Prime95 for about an hour, and the hottest it got was 46c according to realtemps and everest.