With the front end off the ground and pressure on the pedal the front brakes do work. You cannot turn the wheels by hand. But a stop in gravel at 10 MPH does not lock up the fronts, while the rears will skid 10 ft.

I'm thinking any MC problems would show up in the pedal height and it's excellent. MC's are cheap and after I visually inspect and blow the lines, this may be the next thing to try.