Here is a pic. To make the top link:
1. Get a new cylinder. I think mine might be 3" bore x 8" stroke. I have a bigger tractor
M6800 so you might want a 2 1/2 or 2" cylinder.
2. Unscrew and discard the end off the cylinder rod. Take the cylinder to a good nut and bolt house and order a nut to fit the rod. Weld a 7/8" (cat I) spherical rod end to the nut. Weld the nut to the rod. If you don't weld it, it will loosen.
3. Remove the pin from the cylinder end. Fit (cut with a torch and drill) a piece of thick plate such that when this pin is reinstalled, the plate will only have slight clearance between the plate and the contact points on the cylinder. The force on the cylinder ends must be exactly in line with the centerline of the cylinder bore, so you don't want the plate to flop up and down. I cut a plywood pattern such that with a hole in the pattern that fits the pin, It just touched the cylinder end when the pin is installed. Transfer the pattern shape to the plate.
4. Weld another rod end to the adapter plate.
5. Once you are happy with the rod movement compared to the remote lever movement, mark the hose ends and coupler ends with colored tie wraps. Mine are red and blue. When I p[lug in my hoses color coded, the cylinder always works the same.
6. With hydraulic top link installed, lift the attachment to highest and lowest position and with cylinder in and out to make sure at no place does the cylinder or rod end hit the implement frame. I found today that mine does, so it will need a grinder adjustment.
Good luck and enjoy
JRPoux