I have a 1990 120hp Force. Trim and tilt work fine. NO leak down. Only problem is that the motor comes out of the water when reversing. Need to pin point this problem. If I need to replace the disc in the tilt cylinder that has the check valves, I will need to know where I can purchase the spanner wrench and it's part number to disassemble the top of the tilt ram. Has anyone had the same reversing problem and what fixed it. Thanks.