Just got a new GSA, red one, red and black seat put 5k miles on it already a lot in the rain !! ( Norway ) !!! just given it a wash and found it has black marks on the red parts of the seat, i wear street guard pants and my partner some other BMW ones can't get the marks off the seat !! anyone else had this ? or any suggestions as to remove them. No big deal really but it shouldn't really be happening !!