How are the slide out cylinders adjusted?

[motocamper]

I am curious how the slide out hydraulic cylinders are adjusted and operate. Do the cylinders top out and bottom out on stroke when the slides are fully deployed and retracted? If not, I would think that they would destroy the slides or sidewalls once the mechanisms reached their limits. I noticed on my 381M that they kitchen slide cylinder jam nuts are not pulled up hard on the bracket. I have about 1" of play when the cylinder changes direction. A friend of mine's 351M is the same way. I suspect they did this because the stroke of the cylinder is longer than the stroke of the slide. Thoughts?

[OffToHavasu]

They're not supposed to be tight. They're supposed to have the play in them.

[motocamper]

My couch slide jam nuts are tight. Do you know if they are adjusted to coincide with cylinder extension and retraction?