Thanks Max,
AVB steered me in the right direction, there is a circlip under the clutch drum you take out, then you knock the drum and bearing out and then you can get at the circlip holding the bearing on easily. Anyway I cut 6mm off the tube and that allows the shaft to go further up on the spline. Works fine but if it plays up again I will do as Bruce suggested and bronze the shaft to the clutch drum
