Finally took some time and resealed all the cylinders. The two lift cylinders were leaking pretty bad. The tilts a little, but I think quite a bit internally. They would settle a lot when picking up something heavy.
All four cylinders had the ram nut on with lots of loctite. My impact wouldn't move them, and a pipe on a breaker bar wouldn't touch them either.
I took them to a farm repair shop, they tried a 3/4" air impact, 6' breaker bar, 1" IR impact gun, and heating the nut, all unsuccessfully. They ended up applying heat to nut til it was red, then slowly pouring water on it. Then their 1" impact could break it loose.
I made quite a mess, but now it's leak free. Refilled the system with aw-46. Bobcat oil is about 3 times the price, if not more.
I need to change engine oil on it again, and I should also change drive motor oil, as I have no idea when that was done last.