Here is what I have done so far on my project.
I had a metal tube from a closet clothes rack that is about 3/4" in dia.
I used a 1/4" threaded rod. I put the "L" bend, but broke it the first time. Used heat to bend the second time and it did not break.
I installed 4 nuts to rod. Two to lock together in upper section and two locked together in lower section to keep centered in tube.
I used 4 #40 hose clamps. 3 to secure the tube to the cylinder, and one to secure the "L" portion of the rod to the end of cylinder ram on bucket side.
I bought a can of New Kubota Orange spray paint, and after cleaning and priming everything, I painted the tube and clamps orange. The rod I sprayed with gloss black Rustoleum paint to protect the rod from rusting in the tube.
I have the rod set to extend above the tube about 3/4" and will do final painting of the tip with a bright yellow to allow me to see it better.
I am putting it all together today in the garage on a level surface to make sure the rod is positioned properly.
It all worked on the mock-up, and I am sure it will work fine again now that it is all painted.
I would post pictures, but don't know how!