I did a bit of surfing and discovered the following kit made by TSR (Munroe)
here:
A-727 Case Repair Bearing [FONT=Arial, Helvetica, sans-serif]Year 1962 up. This bearing will repair cases damaged by the inner overrunning clutch race hitting the inside rear of the case. Includes bearing and instructions. Machining required.
The "machining required" note causes some anxiety, but apparently this issue is sufficient to warrant a repair kit. I sent an email to Munroe asking him about it.
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