[mclairmo]

I had my steering box and power steering pump built and calibrated together by Lee Manufacturing here in So Cal. They may have been bullsh!tting me but they said that it was best to somehow calibrate them to work together. So, it may be that mdwilf is correct in that your power steering pump is not putting out the correct pressure to work best with your steering box. You may want to speak with Lee Manufacturing or some other steering specialist to see if they can help you out. You may need a different pump or box.