Grease marks on front roof panel

[Aldowaker]

Hi folks. I've been noticing a grease mark, about an inch long , on the front roof panel maybe 6-8 inches from the edge on both sides. They are identical. I can rub it out but when I open the roof and then close it again they are back. Anyone experience something similar? There are no dents just 2 identical grease marks on either side and running horizontally when facing the front of the car.