Did the brakes have a special bedding in procedure? My Ferodo DS2500s on the JTD were worse than worn OEM when I fitted them, but after about 3 or 4 days they got a lot better, by the time I sold the car they were pretty damn amazing.
Nothing special Pud. After fitting new pads used to drive for about twenty miles with the brakes slightly on, three feet would have been an advantage for this procedure ! After that, get home, readjust them again and that was it. These Mintex had about 300 miles on and seemed to be getting worse rather than better, think that they may just have been too hard.
Another quirk on the 'sud was that if you adjusted them too ' tight ' so that they were actually binding it used to boil the fluid, that gave a real sinking feeling, and not just on the pedal either !
Adjusting these things was a bit of an art, the manual said to use a feeler gauge between pad and disc but I always thought this was a lot of faffing around. What I did was raise the wheel off the ground and then adjust each pad until it was JUST binding and then carry out the above procedure, always worked well.
Even the professionals used to mess it up. Once had a service at a premier Mercedes Benz garage which at the time was a ' Service Only ' agent ( weird idea that was ) and after 20 miles came to just about a full stop even at full throttle, they had adjusted them so tight. Of course the fluid had boiled, the discs were almost glowing and it stank something rotten. I wasn't happy and went back and played hell with them. It was an expensive service and they made everything worse although they did give it a nice valet...............