Hello all, I have been leasing my Percy Plus 4 for the duration of the summer and have unfortunately noted two star shaped paint cracks on the lower back end of the car right behind the Wheel. My salesman tells me this comes from stones getting caught in the tires and dislodged when one accelerates. I have been driving cars for 40 years and never had this problem Before. Is there an easy solution except filling the Wheel arches with sticky goo to dampen the impact?