If you have something like Ace hardware nearby check out their bolts section. They have a drawer with random metal dowels, bring in your bucking bar and find the dowel that's about 1/4in longer than yours. It'll be noticeably thinner but it'll work without issue. Not sure on the longevity as I literally just installed mine today but for the first time my clutch works how it should. It doesn't randomly have internal jams where it gets stuck disengaged, I can finally have it set so it's tight enough to not slip at peak power and still fully disengage when I stop. It's literally a game-changer. If it is a hair too long, just grind it down a little.