Intel Heatsink fan won't fit no matter what!!

Hey guys,

so I've bought this new Zalman HSF and looks like it's made for a different socket CPU so I decided to put back my previous HSF which is the intel heatsink fan (got an intel mobo with core 2 duo as the CPU) and it won't fit no matter what, the fasteners are being really annoying! I tried doing everything for over 2 hours including clicking really hard I'm afraid to do it any harder because I know the mobo will break, I tried to do the lock positions in every style possible, flipped it in every angle and direction possible, I merely did everrrrrrything and it just won't fit, I thought of super-gluing it stuck as this computer is my second/alternative computer and I'm not planning to upgrade it because it's like a file server for my things.

Any help is appreciated.