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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Rich,
Two things;
1) Are those bearings factory, aftermarket Glyco, or something else?
2) Picture of the case saddles?
Generally speaking, shuffling is caused by excessive boost, detonation, and/or poor fitment. The working surface of the pictured bearings looks like new, however the backsides display some shuffling.
Date codes are not a positive indication of originality, only date of manufacture and sometimes these can be in an inventory for some time.
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