Super7 ser No SK5457

Hi Guys, I am having trouble with the clutch on my circ 1950`s Super7. I need a new clutch adjusting screw (item 10 section N) and two trunnions (item 35 Section N) in my manual. The problem is the adjusting screw has broken on the end and the Trunnions are worn so that when the clutch operating lever is pulled back, the Trunnions pop off the bearing. Are these available from any source? I could probably make a new adjusting screw from a 1/4 BSF screw,(?) but the trunnions would be more difficult. Any help/advise appreciated. Thanks Rich