The fatal shooting outside Radio Perfecto restaurant on Amsterdam Avenue between 118th and 119th Streets was prompted by a bar fight. Twenty-three year-old Delquan Kearns was shot in the head while his brother Stephan Jones, 27, was shot in the arm after they argued with another group of men over a drink around 3AM on Sunday. Their mother told the Post, "My sons said they were at the bar and that some guy grabbed one......