could be the pivot points for the master cylinder not being in an optimum position, or the master cylinder is not matced to the slave, i doubt its anything to do with the clutch.
thats what i was thinking i have ordered a different slave to match exactly so will give it a go when it comes
is it bled properly so all the air is outta the system?
yes it is bled ok but i did double check it earlier to rule it out