I never torqued one down, just run them "tight" with a Craftsman 1/2 -9/16 combo box end wrench, 25 ft lb may be too much, I've watched guys come in after every time on the track and not "check" them, but tug till they move the nut, and in about a half season, they have broken yet another one, kinda like an egg sucking dog, once they start, hard to make em quit! Might just for grins and giggles, take one to your favorite machine shop, and have them ck'd, any good old machinist worth his salt can tell you in a NY minute if they are cast, 6061, or 2024. Bob