In reply to Robert Durran:
> Didn't western Route used to get IV,7? (probably is in lean conditions> I failed on it a couple of winters ago. Felt 7 to me, but then I'm rubbish.....).
In John Cunningham and Alan Fyffe's, 'Winter Climbs in the Cairngorms' (1981), Savage Slit was Grade IV and Western Route was a Grade III.
I think the FA had been soloed by the late Tom Patey, though having struggled on the wall myself, I assume it had been unusually banked out when Patey soloed it!!!!.
In Rab Anderson's 'Climber and Hillwalker' Supplement's Guide (Dec 1993), Rab graded Western Route as a IV,6/7 for the more normal lean conditions.
Not sure what grade it gets now but the crux wall must be at least technical 5/6 unless banked?