I am attempting to remove the thin metal brightwork on the lower side of a 1959 Impala dash. What are the in's and out's of doing this without damaging this very flimsy metal? I am also trying to remove the entire dash from the car and didn't have too much trouble with each of the sides, but the center is a little more challending, where the metal is sandwiched very tightly together just under the windshield (which has been removed). Do I just need to get a very thin chissel to get them apart or is there a better way? Thanks for the help.