Seizmik pursuit mirrors

Has anyone had the same problem with there seizmik pursuit mirrors. I’ve taken my rzr out 3 times, & now both mirrors are cracked top to bottom with no sign of being hit. I know the fronts were not hit & there is no indication that a stone flew up & hit the mirrors. Could the tension have been too tight from the factory? I never adjusted the mirror tension, just tilted them. Hoping seizmik stands behind their products.