We've owned this tractor for the past 50 years. So we've got a pretty good idea of who has done what :)
Just trying to get a handle on how these part numbers work. So the 6075d merely indicates its a cylinder sleeve and beyond that they are ordered by size? I did notice a A on the other side of the sleeve.
I didn't want to remove the sleeves before a kit was on hand to prevent any thing collecting on a mating surface.