Dave, thanks for the advice. I have been through the manual and I seem to be doing as it says. It does seem to work okay without the film loaded which worries me as that may suggest that the winding mechanism is not functioning as it should.
I was given the camera in october and so far have only put six rolls through it so it may improve with use.
The action of the shutter release locking ring feels a little vague so you really have to look to make sure the dots are lined up. This may suggest that all is not well with the locking ring.
Regards
N