there is a place that specialises in it,
cant remember the name but im sure some one will know, try a google.co.nz maybe
they have the proper tools not just some fat c**t on the end of a baseball bat,
failing that,
how about adding flares ?
also super cheap sell a kit for doing it your self, it takes time, but a good finish can be achieved if you do,
edit :
not the place i was looking for but its a start
http://elitetint.co.nz/
Nothing to see here ...