Yesterday I flashed ARTMOD, and did as you said and it still stayed at the LG Logo without boot animation, is it something related to my phone? I know I'm not doing anything wrong, but it's not working for me. I discovered something, when I was going to back up Kitkat in CWM it said only 63mb needed.
>>>Backing up /boot...
Backing up boot image..
Backup of boot image completed.
>>>Backing up /recovery...
Backing up recovery image..
Backup of recovery image completed.
>>>Backing up /system...
Can't mount /system!
Woohoo, I knew it had something to do with the /system, because it didn't even boot the ROM, but not sure what it was, and I still don't know what it is.