Houston we have a problem.

I have a couple posts up here about issues with a Deere 200clc. Hauled it to the local dealer to have him take a look at it. Arm in function not working correctly. Hooked up laptop and pressures checked out ok so he is thinking it must be in the spool assembly. The tech didn't get a chance to start disassembly on anything yet to start the process. If it ends up being an issue with the spool block or valve block (is that what you would call it?) does anyone know of a place that could repair it? Have to buy the whole assembly from Deere and it's a cheap price of 24,000. My other thought is to try and find one at a salvage yard. Is this a good idea and does anyone have a recommend one they use? Don't know for certain it is the valve block just trying to explore options if it is. Tech did make some mention to checking out a second spool that also runs the arm in. Would like to get this fixed without having the price of a new pickup in it. Thanks

Houston we have a problem.