Bad pic, but . . .
Not Viperoni arms, but similar to what he's doing, I believe.
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OP: When you say the arms are "hurt" what do you mean by that? Damaged arms, or trashed bushings? If you're bending or breaking them it's pretty simple to box the arms by welding (or having someone weld for you) some 3/4" wide stock into the bottoms of the arms.