I spent 2 years chasing similar problems. At least yours are not falling out while driving down the road.
It ended up being a leak in one of the rams. Had pump replaced twice, and the valves, and 2 of the 3 rams. That seemed to fix it, but that fix didn't last. Only when all 3 rams were replaced, and the last one being the Reefer/Kitchen slide, did the problem go away.
Dealer never did find it and finally gave up. Lippert incorrectly blamed the Remote board (The Alta board). Only one place in America I'd trust to find the issue. IF you get to Amish Family Services, mention my name and tell him you're having issues similar to mine. Orvan will know.
"Next to prayer, fishing is the most personal relationship of man" Herbert Hoover
"American by Birth, Southern by the Grace of God"Lewis Grizzard
2016 GMC Denali 3500Dually--2017 CC 36CKTS