Make sure the engine is warmed up. Then try turning the steering wheel to the right and left several times to bleed air from the hydraulics. Hope that helps. /forums/images/graemlins/wink.gif
Do you have a FEL? If so, wiggle the joystick around a bit to make sure it's centered; i.e., the valve is completely closed and then try your 3-point hitch. That's what happened to me a couple of times with my B7100.