727 build fail

That is a sprag failure. Always check the condition of the spring retainer fingers. They get bent, and I beleive reduced spring tension allows the inner race to migrate around, which allows a roller to jump to the next pocket, then two, then....... here is an impending sprag failure I found on disassembly. Check your case carefully for fractures around the outer race.

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Note the fracture in my picture directly above where the two rollers share a pocket.