Default [Q] [Help, Q] Efs corruption when Rebooted in custom Rom

Hi, When ever i hard reboot my phone my efs gets corrupted, but for soft reboot it is good. In stock rom no such problem, but i tried many custom roms, it happens. Initially when the rom is installed it dosen't happen. After a few days, after installing a few apps it happens. I am not finding any help in this matter, please help.

Also can i change csc to inu (india) in custom rom, I have installed latest modem for my country (india). But my signal keeps fluctuating. I am using Slimkat 5.9 weekly 4982.

Thanks a lot.