I am having problems with the valve assembly on the ML106 loader on my 2615. I found on a related post that you can get new valves online at a very resonable price. The Mimco Control numbers on the valve are no help in identifying the correct valve. The seller of the valve is not a lot of help in figuring out exactly which valve I need. The information they ask for is: Is it an open center system? Does it have load sensing? Can anyone answer these questions?