What I meant was they either know how to do it or they don't. If they don't you can do it yourself.
Just recently I had two dripping cylinders on my backhoe (mine I got as a package). Dealer picked it up, returning it (I paid pu/del) with repacked cylinders. That lasted two days, dripping again. I called manufacturer, climbing ladder to a supervisor who sent me two new cylinders.
I installed, no leaks.
You don't tell dealer what to do but lots of times you can do a better job yourself.