Spider brake booster troubles?

["Miller, Michael C" <michael.c.miller@xxxxxxxx>]

If a spider ('79) brake booster is not holding pressure, can it be fixed?
Or is it terminal and needs to be replaced?

Symptoms include stiff pedal feel, pulsing through the pedal, and a hissing
sound when brakes are applied.  I replaced the intake manifold check valve
and hose to the booster already.

Mike
'79 spider

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