I just got my case today, and am in the middle of installing the motherboard. The case (corsair carbide 300r) does not appear to have all of the standoffs for my motherboard. I have a biostar ta75m. Are the standoffs used to just hold the motherboard in place? or are they used to complete circuts in the board and such? So in short do I need to have ALL of them? If I do, should I just contact crosair?