Make sure your body where the brackets bolt on is at a 90 with the bottom of the taillight section. If it is your brackets are bent. No the brackets cannot be switched. Were the quarters replaced? Here are some pictures of original cars with original quarters never hit. You are missing the rubber pads on the body at the ends of the bumper. They were never perfect
View attachment 1716195744
View attachment 1716195745
View attachment 1716195748
View attachment 1716195749
View attachment 1716195750
View attachment 1716195752
View attachment 1716195754
View attachment 1716195756
