How was the original cooler then mounted to the card ?
Leadtek, special screws which are mounted on the block it self, Combined with special bolts witch include springs.
In my own videocards case, the original cooler was mounted with plastic 'click mounts'. So no screws on both cards.
And again, with the block i recieved 1,5 months ago which is on my own card, there were correct bolds and screws.