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Old 03-02-2015
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Chris Larner Chris Larner is offline
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Join Date: Mar 2010
Location: Ipswich
Posts: 690
Default Blocks

Use a Vernier or callipers to measure the edge of the block to the edge of the plastic insert. It should be the same if it isn't (which for the faulty ones it is about 1mm different) then they are faulty.
Hope this helps.
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