Drive forms?

[x-tweedle-dum-x]

Can you level up drive forms above level 5?
I have valor at level 5 and i cant get any higher i was just curious if i had to do something first or that was it for forms.  

[Greenk4]

I'm pretty sure 5 is the max you can go. It would kill people to have to grind those nobodies and whatnot just to max out any higher. (I know I'd be one of them angry people)