Stock Dana 44 shafts hold up to 35's and a locker but if used hard enough it can twist a bit at the splines which happened to me. Didn't break but it looked like it could in the future so I replaced them with 4340 shafts. It has been so long I don't recall if this photo is of my actual twist but it shows it well.
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That looks fine to me, Jerry. The last inch of that shaft is perfectly straight!