Last weekend while moving dirt for my new septic site hydraulic fluid began spraying out of the bottom of my MF 1533 loader joystick/control valve. While checking for loose fittings I realized it was coming out on from the opposite side of the output lines past the Allen screw. At first I though I knocked off a screw or fitting. To make the story short after $150.00 transportation fee, $300.00 in extra excavation fees, and 1 lost week the dealer told me it has a pop rivet that fell out. You are most likely saying the same thing my wife and I said, "why is there an pop rivet in the high pressure hydraulics?" The dealer said MF fix was to drill out the rivet and replace it with a screw. Does anyone know why this rivet is in the control valve and should MF recall these parts and pay the transportation fee?