hi all,strange problem with the roof on my 2019 cupra lux.when the climate is overcast and not too warm,the roof is normal shape,but when it is sunny and hot,(not very often!),i get two shallow dents appear sideways across the roof.they seem to coincide with the internal strengthning rails.my car has a sunroof.funny thing is,i drove to my local seat dealer today,where they had a brand new cupra parked up,and it appeared to have the exact same problem! they did'nt seem to have any ideas for the cause,so i was just wondering if anyone who uses the forum might have come across anything similar? anyway cheers and stay safe.