Weber Kettle is dented, how do I get it back to be round (to prevent leaking)

Long story short, my kettle is now an oval. I've bent it back relentlessly but I see it's still leaking smoke. Anyone brilliant out there know how to get it back to be near-perfectly round with a good seal?

Thanks in advance.

Submitted June 29, 2018 at 08:20PM by haha__sound https://ift.tt/2KxQUXj