[Q] Wrong partition size on my N7000

Hello folks.
First post here on XDA but I use this forum since I bought my Defy a couple of years ago. ;)

Here is my question and sorry about my english.

I was a victim of Galaxy Note softbrick some months ago.
I did revive my device with the help of some tutorials, especially the one from forest1971, which helped me a lot.
But I noticed the partition size of the Internal SD, its completely wrong.
Instead of 16gb, it's showing only 4gb.
I tried several custom PIT files, original PIT file from Samsung and no results at all. Always showing 4gb.
Is there a way to revert my partition to the original size? Some partition manager or stuff like that.
I miss those extra 12gb because of photos and games.

Any kind of help and advice would be appreciated.

Thanks!