The camper is 10 months old. Took delivery in May 2016.
I spoke with the service department at FWC and am actually going to be visiting the factory Monday. They're going to pull the rung and send the pieces off for analysis. As usual, top notch customer service. I'm guessing it's some sort of casting failure that left a hairline. That one side that had center rust was night and day different than the other-indicates a specific point of water intrusion.
I'll keep everyone updated!
Odd, we took delivery in February 2016 [Hawk] and our steps are not "bolted" into place like your picture shows yours are...ours are round head hex fasteners. So your FWC is also a 2016 model?
Let us know what FWC says after they look at your broken pieces.
Not good for you, but this is a rare event...has anyone else seen these steps break?
Good luck...Phil