>One vendor doesn't like to have them because he believes 
>of the possibility of spinning the internal pad since
> there is no track to hold it in place.

First time I've heard of spinning pads...Hummmmm
Smell like...Bovine feces...

Louis T. Dallara                   
Printed Circuit Design Consultant   Routing for Performance not Connectivity!!
Under contact to Lockheed Martin Fairchild Systems
[log in to unmask]      http://www.waterw.com/~ldallara
 

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