I have not seen this, but one way to inspect the roof underneath is to remove the skylight on the inside and then stick your head in the hole and you can see the struts. It may not work for all trailers, but it is the best I can think of. The skylights is made up of two parts, the part attached to your roof and the part on the inside. The inside part comes off easily when you remove the screws. I have removed mine in order to cover the skylight as I do not want it.
You could also just ask the dealer. Bring it in for him/her to look at.
2012 Cruiser Sahara 330SS
2015 F250 Super Duty diesel