Sterling, it sounds like they just need a good bleed. You cant bleed properly without 2 people or a brake pedal clamp as used when doing a caster swing on a wheel aligner

You need someone on the pedal and someone at the caliper/wheel cylinder.
Sequence goes from the longest pipe run to the shortest. Typically LHR,RHR,LHF,RHF for an escort or cortina.
Pump the pedal,then hold it down,crack the bleed nipple,let it bleed out,tighten nipple,pump the pedal.Repeat the process several times at each bleed nipple until no air comes out. Go round the car 2 or 3 times if necessary. All this is a waste of time if you have a leak, make sure you dont have a leak first