I've had boxes of blades that did this - I use a needle 
probe to poke the top 2 blades apart (poking through the 
little window where the slider goes). It takes a few tries 
sometimes, but once you can separate the top blade it 
slides out in a jiffy.

Tamara

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Tamara Howard
Cell Biology & Physiology
UNM-HSC
Albuquerque, NM
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