I parted out camper and the slide tracks had bend on them, while still working without a problem. Evidently PO had to overload it at some point, but the tracks are close to the floor and when bend- the gear would make marks on wooden floor.
I never had fridge with side vent, but when I tested my 20 yo fridges in triple digit weather to perform rather well, I read on Sprinter forum that fridge with side vents are constant headaches.
Even adding fans behind the fridge is not making it work right.
Coming to my test, my dual door Dometic froze big water bottle with 103F outside down to 0F.
It is refrigerator part that stays a bit warmer than desired, but freezing water bottles overnight and putting them in fridge for the day solves the issue.