maybe a very late reaction but you can edit pit files with a program, you can find it on google since it's also a program from a xda thread.
But. I suggest all of you guys to NOT do this since editing pit files is Highly risky cause when the pit file get's corrupt and you flash it to your own phone then you will end up with a Brick or a pile of replacement parts.
Also if you modify for example the system partition to be smaller and you will flash later back to stock and if the rom will not fit then you will have problems. Just don't do it, not worth the risk.
The best thing that I can suggest is to get a good Microsd card since the fame doesn't support OTG? Or does it?
Btw, sorry for bumping this.