My 2011 fusions .I was on the way to work had to come to a quick stop and had to put foot in the prdal after that the pedal wanted to goto the floor with vary little braking, I was told it was the master so I changed it and well its got even less..New master bennnnnch bled it, installed it cant seem to get it to build up preasure in order to bleed at all.No leakes on the calipers?.Im out of iseas. nany sugestions.?