Lever straightnin is easy but not for the faint hearted. Movement ain't much distance wise, 1/4 inch or so, one leg follows the other so cold forging is fine. Supplies needed are concrete floor, steel plate, couple big flat wrenches to transfer blows, medium SmasherWacker and patience. A few taps from the SmasherWacker and its usually forged straight in 3 to 5 minutes. Then a bit of shapin the inside and outside of the lever to clean up any marks/smooth a surface and HA, Its Done!