This sounds newbie and all but i just want to keep things as safe for me and the pc as possible. First build ever and i am about to screw a DFI ultra into an akasa eclpise case. No screws with the motherboard and there is three different types that came with the case so i take it its one of these. Just wanted to know does it really matter which type of screw i should use? And should i use all the screw holes available on the motherboard and screw them as tight as possible to keep it secure? I had attempted it a few mins ago and a few of the screws were not reaching the metal casing at the back to secure the motherboard to it so i had to apply a bit of pressure and also when i was screwing a few of them in i could see the motherboard bending and felt uneasy, so just wanted to ask before i continued cheers.