I honestly believe that your troubles either are due to a bad pump, not having high steer, or a combination of both. Over the past few days I have been mindful of how my steering is at any given point and it really performs flawlessly. When I originally decided on hydro-assist, I consulted Jey about the performance given the extra component to the system (the ram). He mentioned a couple things that led me to ponder certain upgrades such as a better, higher-flow pump and a larger reserviour. However I soon realized he was dealing with a 3.0 and not a 4.0, so both parts (pump and reserviour) are different.. namely the reserviour, which is an integrated part of the pump in the 3.0's as opposed to the external's on the 4.0's which are larger by nature (a problem he had was too small a reserviour, which acted against him in two ways: when the ram was fully extended, the system was starved for fluid, and likewise when it was fully compressed the reserviour would overflow).
Anyhow, just my $.05 worth!