I have a Dixon Ram Mag 50" mower with a 20 hp Honda engine. The left hydro pump has developed a chattering noise and loss of power while going up hill or if you push the sticks forward too fast. If it had gears I would say it feels as if the teeth were slipping by one another.That is the feeling I get from the sticks. Once I pull back and accelerate slower it stops. It doesn't bog the engine down so it isn't drawing excess power. Fluid level is good and fluid is clean. The right side seems fine. Any ideas guys? Note to Dixon haters....If you are going to bash my equipment choice at least say something constructive to solve the problem too!!!