jrb style 416 series john deere coupler hydraulic cylinder

until i get into the for sale/wanted forum to see if someone has a spare for sale i figured it would be a good idea to find out what others have experienced in what took place during their experience rebuilding their hydraulic attachment pin couplers hydraulic cylinder.
i,am really looking for guys that have only delt with this particular part only ( at209163)
reason simply , its a special custom cylinder and the guys that have them will know that.
its kind of simple guys . rods are...

jrb style 416 series john deere coupler hydraulic cylinder

jrb style 416 series john deere coupler hydraulic cylinder