Wasn't there some discussion a while back about a problem that a few people encountered that was similar to this. Wasn't someone saything that they actually had plug come out the thumb hole, while plugging the fingers? I think ultimately it was suggested that there were voids in some of the balls, where plug could leak through.
Forgive me if I am wrong here.
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dR3w
"I did nothing. I did absolutely nothing, and it was everything I thought it could be. "