Brake problem?

Well now they tell me if you clamp the front hoses the pedal comes up but still isn't firm, kind of mushy, they're thinking prop valve or booster maybe. They're also talking back and forth with the Institute of Nothr American Auto Techs or something along those lines. Apperently they checked the caliper and master bores etc. to see if that was ok and it was.

It boggles my imagination, brake systems are fairly basic so it just doesn't make sense. Since they're unable to fix it so far we still don't know what caused it in the first place. All was good and then I had no pedal for no apparent reason :munky2: