[Our3231CK]

Is your sleep number bed part of a slide out? I notice on this trip that the wheels on our slide out have collapsed. The only change we have made is replacing the mattress with a memory foam hybrid, its weight is 70lbs. In the storage under the bed with only store toilet paper, paper towels, central vac hose & parts and empty fold down suitcases.

Anyone else have this issue? is it easy to replace the wheels? i believe the sleep number is heavier than our regular mattress so has this affected any others?
Wheels are cheap plastic