IVE BOUGHT A 4MOTION REAR LOWER VALANCE FOR MY 02 1.8T golf with cut-out so i can fit milltek exhaust, i tried to remove existing one today but didnt want to come off. i removed screws from wheel liners and 2 bolts from under but still wouldnt move, it has push in fittings which fit into upper rear spoiler i didnt want to force it incase i damaged upper bumper. what is correct way to get off. i may have to take it to garage so they can do it. help.