What is causing the rear seal in my transmission to keep breaking?

1981 OLDSMOBILE NINETY-EIGHT REGENCY
200,000 MILES
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TONYMILLN
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I had the transmission rebuilt, the drive shaft rebuilt and a new yoke installed to prevent excessive movement from breaking the rear seal. A few days later, the rear seal is broken again and the transmission is leaking. What is causing the rear seal to keep breaking?
Mar 15, 2012 at 2:40 PM
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