I think my mobo am3+ did not come with a backplate since all i needed to do was click in 4 plastic screw kinda things (dont know what theyre called) i could just latch the amd stock cooler on that, however i am trying to install a scythe mugen 4 now, but i can't install it because i do not have a backplate to screw the screws in :/. Mobo is an asrock 960gm-vgs3 fx. Do i need to buy a backplate now? Thanks in advance.