09-10-2013, 06:03 AM
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Backdraft Racing Dealer
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Join Date: Dec 2004
Location: North Haven,
CT
Cobra Make, Engine: Backdraft Racing
Posts: 5,124
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Not Ranked
Most likely they are snapping at the welds. We battled a batch last year that were ground down too much on the inside and not welded from the top side.
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