Crusader Lite 30BH New March 2017 Roof side bubbles

[crash999]

Crusader Lite 30BH New March 2017 Roof side bubbles.
I was on the roof checking things and noticed that along the edges of each side of the roof lining it was bubbling slightly, about a yard each side .
I guess its one of two things : A not pulled down and secured properly during construction . B water ingress through the seal that formed the gutter on the topside of these units bubbling in the Spanish sun.

Has anyone else had this problem? Remedy?

Thanks