[6pack] Vacuum leak?

["Dr L. Kevin McNelis" <kmcnelis@nmsu.edu>]

Symptoms:  Going down a long, gentle grade, under light braking.  
Brakes get less and less, the boost goes away.  If I mash down hard, 
I'm OK.  No, not such a long hill, and not such hard braking that I am 
gettin heat fade-  it's not that. 

If I lift my foot from the brake pedal, the boost comes back.  I have a 
re-built booster from that guy that used to re-build them, but then he 
sold his company.  I can't remember his name.

Vacuum leak elsewhere?  Or a bad booster.  There is no loss of fluid....

Kevin
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