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Is anyone aware of any issues with mounting a Happ trackball in an 
inclined panel (say, 30 degrees from the horizontal)?  Does the ball 
sag down with gravity over time and eventually lose contact with the 
rollers inside the trackball assembly?

If anyone can share any experiences one way or the other, that would 
be a big help.  Many thanks!

-- 
~~

Allan Ayres
Exhibit Developer
Lawrence Hall of Science
University of California, Berkeley
Berkeley, CA 94720-5200
[log in to unmask]
510-642-1254

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