Its my white 1990 honda civic, all over the body its chipping paint, not badly but its a bad paint job nonetheless. On the bottom sides theres chip guard, and its chipping the white paint and its exposing the black “gummy” chip guard. How do i repair this? do i have to sand the chip guard off? I’d like to just keep it cause it’ll protect my car, but how do i get the old white paint off the rock guard without taking the rock guard off.