I just bought a used Z (2007) with about 800 hours (maybe, but the meter wasn't working either, although it doesn't seem very used). The right stick is sluggish. It doesn't have enough power to get up some hills, and is slow to respond, even though it does seem to load the engine more than the same left stick movement. How can I tell if it's the pump or the wheel motor? It's got a Hydro Gear BDP-10A pump and a Parker/Ross wheel motor (not sure which one). Should I just take off a wheel motor and stick it on the other side to see which one is bad? Is there an easier way? Thanks! BTW, I'm new to the forum.