So I have a 2017 XC90 Momentum T6. I was up to today untying a kayak I had strapped down up top and I noticed some dents underneath the roof rails. I have never seen them before and would think I would have. The really weird part is they are on both sides and perfectly evenly spaced. I have tried to think of anything I have ever tried to the rails or crossbars that would have contacted these spots and I can think of nothing. BTW - The crossbars are Volvo OEM Thule aeros (i.e. the regular ones). See attached photos. Any ideas???