I was using my post hole auger last weekend and when I put the auger up, the 3ph started bouncing. This has never happened before. Tried a bale spear yesterday and it happened again. Tried adjusting linkage and different holes and that's not it. It happens regardless of adjustment or hole and at any height if there is a load on it. 
I also noticed that between the hydraulic pump and the valve block that I am leaking fluid between the two. Do I have a pressure problem or maybe a bad o-ring or sticking valve? How do I tell?