I have a LiteOn IHAS124-04 drive, and a Fractal Design Core 1000 case. The case said it supports 5 1/4 inch drives, and the LiteOn is one of those, however it doesn't seem to fit inside the case. The outside bit that sticks out barely fits through the hole in the case, and I have to force it through. There are now scratches on the side of the outer frame. The screw holes in the drive do not line up with the holes in the case. Have I bought the wrong DVD drive for this case? I didn't know there was anything other than 5 1/4 and 3 1/2 for drive sizes.