Thanks for the replies. The Classic TT was actually called "The Premier Classic TT", I seem to recall.
I will look through my Silver Replicas and remind myself of what the ACU called it, but I'm pretty sure I'm right.
I think 1984 WAS the first year the capacity limit was reduced to 750. Did Roger ride a V4 in the F1?
Did he actually start in the Production race on a VFR1000R? I just cannot recall him on a V4 that year.