Pete,
Thanks for the info. I am a relative Newby to British cars.
I agree the small spigot GT-6 shaft looks worn, however the other larger input shaft I have has a different gear size.
I was afraid that machining the 1500 shaft would destroy the surface hardening.
I am unaware of "Rouge gallery". Are the shaft numbers you mentioned from this group?
Thanks
Terry Thomas
Xtbearx