Having too firm a clutch can be a sign of a faulty slave/master so don't assume it's all perfect. Like the others have said, give the clutch a bleed. It's a difficult job but I have a write up in the how-to section that seems to work for me.
Also change the gearbox fluid, MT-90 is used by most of the members here and is a GL4 oil. Always undo the fill bolt on the box before draining the fluid to make sure it's not seized and you'll be sweet.