best way to roll the inner lip on the flat arch saxo

[Robbie-Flat-Arch]

what is the best way to do it? i will be doing it myself

[ryanessex]

grind it off and cover fresh metal with paint

[Robbie-Flat-Arch]

erm i was told grinding it wasnt the best idea to be honest mate was told either get a fender roller which costs a fortune! or a hammer and heat gun was next but wanted other ideas first