Thats a coomon mistake when repainting these cars, mine was done the same way..... Its probably best to sandblast them while off the car , I know its a pain to take them off , but maybe more pain if you blast off some paint... mine were sandblasted in a small cabinet...turned out just fine...
could also tape carefully like Drew mentioned above and use paint stripper....theres a very good one "DeKote" by Eastwood , I used for my header bars abv windshield...costs abt $12.00 for a bottle and I used maybe 1/2" of a 10" bottle, just tape carefully to not get any leakage....brush on , let sit ,takes 30-40 minutes then scrape off , rinse off...
