Farmall 400 sloppy steering

The slop is mostly in the power steering, but there are other small contributors elsewhere, such as the U-joint, coupler, and steering gear. Is there a way to fix that slop in the power steering? I heard about the quick fix in Red Power Magazine, but his problem was in the steering gear box.
I don't want to go broke fixing it, but I don't want a temporary cheap fix. If there's an easy way to fix the power steering I'll tackle that job myself. Any help with this is much appreciated, thanks.
P.S. This 400 was used as a loader tractor for some time. This might be the reason for all the slop.
 
The steering torque motor (unknown origin because it could be aftermarket, or OEM.) is controlled by a spring or torque rod that senses steering pressure. If the splines, or Key that drives this sensing element are worn, the steering will e loose. Taking apart the unit is not difficult, but worthy of taking pictures and being clean (before during and after. A manual is a great idea. Jim
 
In the manual for a 400, it says to mark the valve body, and the bearing plate, and the end cap so they can be reinstalled in the same position. Use chalk or crayon to mark the idler gear and the power gear so they can be remeshed together during assembly. My power steering does not work as well as I would like it to and I believe it is because I did not get it reassembled correctly.
SDE
 

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