I had a mishap with my P3. Clipped some tree limbs and then came down on a metal sign which cut the flex cable at the very bottom where it plugs into the pitch controller. I notice before I replaced the flex cable that the yaw arm was rubbing the plastic base plate insert. Very slightly but rubbing. After replacing the flex cable the arm is still rubbing. I tried sanding down the insert as I probably only need 1/32 - 1/64" to move freely. If i leave the plate off it functions properly. Am I able to move the yaw arm up (or actually down when p3 is upright) slightly on that shaft?