I have a MSI B450M Mortar motherboard, Thermaltake Versa H15 case and an LG 5.25" optical drive. Problem is, i can't mount the drive because it hits the system fan header. Can some one recommend a mATX case they know for sure doesn't have this problem? Would the Fractal Design Focus G work? Do i need to get a mid tower case to avoid this issue? Thanks for any help!