Depends on how thick it is! Thicker = more likely to break.
Use something like the Sears Robo Grip pliers which will give you the most control and leverage.
Use a towel or similar in between the pliers and fins to protect finish.
Instead of trying to fix it all at once, do it in increments, approaching your goal.
Use something like the Sears Robo Grip pliers which will give you the most control and leverage.
Use a towel or similar in between the pliers and fins to protect finish.
Instead of trying to fix it all at once, do it in increments, approaching your goal.