Just tonight, our 82 Westy started a weird syndrome.  The brakes have worked
fine in the past, and still worked fine after the install of a rebuilt
motor, but tonight was different.  They work as they should 85% of the time,
but the other 15% I need to pump them to get a firm pedal.  All vacuum lines
are connected firmly.  Any ideas??? Anyone?  Bueller?

Mark
82 Westy