So I have an issue while shaving my girlfriends legs, when I go with the grain everything is fine and no issue, when I go against the grain she says it's rough and feels like she's getting razor burned, the legs never turn red or bumpy like a burn but I change and go across the grain anyway. Is there anything I can do? I've tried with 3 razors included an adjustable and setting it to the lowest setting for against and same story. any ideas?