Overhead want go up all the way.
Make sure nothing is binding or blocking it from going all the way up. We have a 2018 37.1 and it goes up flush to the ceiling. What you may want to try is tapping the down button (not enough to make it actually move) and trying up again, holding the button for a few seconds after it stops moving. Thatís effectively how you sync the two sides of the Schwintek system used by the bunk and slides. If it still doesnít want to lift all the way up on the one side, you may have an obstruction (e.g., trim, screw or something in the bunk) that the lift is hitting or maybe the bunk is slightly tweaked so that corner is low but all the other sides are up against the ceiling.
I havenít looked too closely at it to be sure of what Iím about to say, but the cable that raises the front side of the bunk may need to be adjusted. Maybe lengthening the cable on that side would lower the front, allowing the back to hit the ceiling at the same time as the front. If you look up next to the fan (mine has fans attached to the underside of the overhead cabinet), it looks to me like itís adjustable with some nuts on a threaded rod.