Clutch pedal pressure

Hi I have replaced both master and slave cylinders on my Bertone, car was in a garage for 16 yrs
the slave cyl was completely full of powder anyway, first press of pedal no clutch,2nd press
great,I have bled the system countless times and adjusted the slave cyl rod in and out can
not get pressure first time, no leaks no fluid loss can sit with car in gear no creeping
forward any ideas,

Thanks Robert, Bangor N Ireland

Pm sent.....

Did you replace the flexible pipe that runs into the slave cylinder?

Also, when I have bled the clutch system the only thing that I find works is to force open the slave cylinder with a bar to remove any lurking air in there.