Bought a very nice one owner 1981 MF 285. It looks like it has never had a loader on it. I bought a 2004 Koyker 510 loader because it came off of a MF 285 (no fussing with brackets). I plan to put on a joystick with 3rd spool for grapple. Here is a picture of it http://www.ebay.com/itm/like/273019379123 it has the joystick for the first 2 spools and a lever for third spool grapple. I am not that experienced with tractors and even less with hydraulics...so I have been on internet hydraulic school for the past couple months and have learned a lot. My question is how do I plumb in this valve? I believe I need a combining valve that I have read about on some forums, and I know that this will replace the transfer plate that is there now. But I don't know what line go in and out of this combining valve once it is installed. I am thinking the combining valve combines the fluid from the Ferguson pump and the fluid from the auxillary pump. And I am thinking that the standpipe under the transfer plate (combining valve) would supply the high pressure fluid from the ferguson pump. Does a line from the auxillary pump need to make it's way to the combining valve? This tractor has a factory 2 spool valve that powers the 2 sets of rear remotes, if this factory valve has a Power Beyond port could/should that be run to the combining valve? Thanks so much!