My first thought would be sure any air is out of the system. Did the reservoir ever go too low? If no air, the pads may need to be mated to the rotors by following the bedding procedure.

With fresh fluid and new lines they should feel more firm.

How did you bleed the brakes- friend pumping and wrench or a vacuum bleeder?

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1987 300TD 147,000 miles- Palomino leather interior, 1995 facelift and body cladding, E350 wheels, Rebuilt suspension and sport springs, rebuilt turbo, New Monarch injection pump and injectors....and the list goes on and on...