Interesting. We bought our 2014 Columbus 365RL in October of 2103 and after reading about the concerns of the hub seals leaking, I removed all 4 and inspected them.
I posted the results and some pictures, in another thread: Brake Issues On Columbus
We will be returning from a 2 month trip the end of this week and will have accumulated about 1,200 miles on the coach. When we get back, I'll be doing my regular clean out, wash, wax and inspection. And, I'll be adding removing an inspecting / adjusting the brakes. (which are currently working normally)
Tina + Dutch and Bell, Bobo, Harley, Buddy (the dogs)
2011 F350 Lariat 4x4 DRW SuperCrew 6.7L (B&W setup w/Air Lift 5000 Ultimate)
2014 Columbus 365RL (Airflex and Voyager package)
Nights Camped 2014 - 154
, 2015 - 32, 2016 - 4