[TR] Clutch shaft replacement

[Jim <cartr4a@ameritech.net>]

I'm replacing the clutch on my TR-4A, and also replacing the clutch shaft, 
fork, etc. I bought the fork kit from TRF and the shaft is different from my 
old one. My old shaft has a groove cut in it on the end away from the slave 
cylinder for a retaining screw, the new shaft doesn't have a groove. Is the 
retaining screw necessary? Anyone use this shaft without the screw?
I noticed in the TR6 catalogs that retaining screw isn't used. Opinions please!
   
  There's a picture of the shafts here:
  http://www.geocities.com/britishiron2000/test.html
   
  Thanks,
   
  Jim
  '67 TR-4A
  '68 GT6
  '73 Spit6
  http://www.geocities.com/britishiron2000


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