Dang....I is a DUMMY!
I just looked at those pics again, and I missed the OBVIOUS
It's the CHAINS that it's using from the rock shaft to the lift arms! If those were replaced by solid rods that would give you down pressure, as long as the hydraulic cylinder is a double acting one.
You would want at least one of the rods 'adjustable' so that you could level the implements, or in the case of a single bottom plow, angle it to be vertical when you have the right wheels in the furrow.
Dont beat yourself Ol'Buzzard, I should've explained in detail what I really needed info about.
What I wanted to know was : 1. Is this a correct 3 point system? 2. Could I modify it to get my bedder to stay down and not float on the ground? or is it supposed to be built with chains and that I are the problem by hooking me attachments wrong?
Down pressure is only of limited use because any down pressure removes weight from the rear wheels and limits your traction. Most attachments don't t require extra down pressure if they are setup properly. Sometimes you can add weight to the attachment to make it dig in better. Nice tractor and hitch! Take a good look at the linkage and cylinder. The hitch may not apply down pressure if the linkage is designed to float.
The down pressure Im talking about is not to press the attachment down per say. Its to keep it down whe lowered.
Sorry, my bad