I know the pitch and roll MOTORS work, but I don't think the drivers do, as the ribbons are different in the p3's, although I never tried? So I might be wrong?
If you are having trouble finding a working driver, I have a friend in California, that has them, he has cheap prices and guarantees his parts! He runs a local repAir shop there, and has helped me in the past with hard to find parts!
Let me know, and I'll forward his number to you, privately!
J Dot
Would be cool to know the answer to your question, but not worth burning a $175 mainboard trying!
Best of luck, and hope this helps! Let me know if I can help with the part!