Two-Weapon Fighting with double weapon (Pathfinder)

[Eternall]

Hi, I m not sure but i think that penalties provided for double weapons are not correct in FG.
When i use a quaterstaff the penalties are -5/-9.

It should be -4/-8 (-6/-10 due to the two-weapon fighting and -2 for each hands because the double wepon is like using a one handed weapon and a light weapon. )

Am i wrong ?

[Eternall]

oops never mind. penalties are corrects, sorry you can delete this post