Soft pedal, poor stopping power = air in brake lines
Hard pedal, high pedal pressure reqd for stopping = low/no vacuum to brake booster or defective/leaking booster.

Fuzz,
I recommend that you check the big vac line that runs from the vac pump to the booster for cracks...easy to damage that unit, especially when it's OEM and 25+ years old.

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Never a dull moment at Berry Hill Farm.