#2557 NORM Untriag: Left pointing scroll pad activation, is stiffer than other directions on some B4 machines

[Zarro Boogs per Child]

#2557: Left pointing scroll pad activation, is stiffer than other directions on
some B4 machines
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 Reporter:  danerogers  |       Owner:  mlj      
     Type:  defect      |      Status:  new      
 Priority:  normal      |   Milestone:  Untriaged
Component:  mechanical  |     Version:           
 Keywords:              |    Verified:  0        
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 The scroll pad button is aligned by two details on the lower part of the
 button made of a soft material.  On the left pointing side, the alignment
 detail is very close to the button so there is little slack.  When the
 button is pressed, the soft material must stretch to allow activation of
 the switch below.  On B4 machines, the "soft" material has a higher
 durometer (hardness) than on my B2 machines.  This causes some B4's to
 present more resistance to pressing the left direction and results in
 relatively different pressing force than the other directions.  This
 design is sensitive to process variation.

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Ticket URL: <https://dev.laptop.org/ticket/2557>
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