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Old November 15, 2012, 08:56 AM   #3
mdThanatos
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Join Date: August 19, 2008
Posts: 75
I could be wrong but I believe there have been some design changes with the locking blocks since 1990, to strengthen them up. I would opt for a later model with the new blocks instead of the 1990 model just for that peace of mind. With a new model you also get the limited warranty, I think a year, versus no warranty with the 1990 model.
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