Hi Kamikaze47,
I have an idea of unknown value, having not tried it myself yet.
Open a new page in PBP and write only Define OSC 4, save it and compile, then open the asm file to see what it wrote, print the page, change the define to other numbers and repeat. Do this so you have several copies to compare, and you might get enough information to manually edit your projects asm file, then you could run that through MPASM. Anyway . . . just an idea.