I purchased this boat about 4 years ago, when I got it home and put it in the steering was very stiff. I just dealt with it. When i decided to fix it this year I didn't know how big of a pain in the ass it was going be. I started with a new p/s pump, so at 600-700 $ from Merc. I decided to go with a reman from NAPA. when I separated the tank from the pump the old pump has the exact number as the reman, I used the original pumps pressure relief valve. This didn't fix the issue so I went through and insured all the hoses where clear and not collapsed. My next step was to try the steering cylinder, the local marina had a new take off from a crate motor that he sold me for 200$. still no fix. When I had the cylinder off I checked the cables and the stern movement, no issues were found, everything moves freely. Does anybody have any idea of what could be the issue. The only thing that I can figure is if someone already tried this but didn't change the pressure relief valve from the original pump and I have the wrong one now. The pump that I took of the boat has the same pressure valve part number as the one that came with the reman pump, but I still used my original one. Does anyone know what the part number of the relief valve should be?? please help!