8 3/4 Diff strengths?

justinp61 said

489's and 742's break in the same places as 741's do. Been there, done that and seen it many times.

BTW, it was a good design for it's intended use.

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I agree with your post. But I was trying to emphasize stiffness and rigidity to maintain mesh alignment. Not outright breakage.
Most of the breakage I have seen is cap breakage and gear breakage. What other kinds of breakage have you seen.