Update : small washer large washer then bearing all greased then small washer large and then small then pin. while off I took the forked pin that holds the cable housing off and rotated the gear cables 45degress in either direction,and then re fitted everything but didn't press the forked pins in as hard as possible just enough to hold them in place and the gearchange is spot on nice and smooth and free. Also tried changing gearbox oil which made a small bit of difference.