First thing I would test famous bob is the simple brake lock test. Take your car to a no traffic gravel road, go 10 mph, then apply the brakes starting gradual then hard until they all 4 lock up and slide in the gravel.
Now go back and check the tire slide marks in the gravel. If all 4 have come on at the same time that is what you want. If the fronts come on first or if the rears come on first this is not good. You want to make sure all 4 wheel brakes are coming on at the same moment in time. This pedal hardness is the next step up the diagnostics chain after you figure out what is going on with this first test.
More to come . . .
