My case which is a rosewill blackbone, the screwholes for it are not lining up with the power supply a corsair cx600. The 2 left screw holes are about 1/8 inch off.....what do i do?
Return it to your vendor for one that is actually manufactured properly.
1/8" is a lot to be out by. That would be extremely poor manufacturing tolerances and would be considered a manufacturing defect.