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Old 04-20-2011, 06:16 AM   #9
bbcamp
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Join Date: Jul 2002
Posts: 30,305
Probably leaking past the red tape. Get a plumber's test plug or even a party balloon to seal the drain. Some one here used a tennis ball stuffed into a rubber glove for a plug. You need something that can maintain a seal around the inside of the drain pipe. That red tape isn't up to the task.
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