Dougie,
As you know by the 80's rank inflation, university entrants, and Spec Aircrew meant everyone was a Flt Lt and Fg Off aircrew became the rare breed.
Pontius,
I started the B as a 5 paper exam and got a partial. By the time I passed the failed papers, some of the papers I passed first time had been scrubbed so I can claim to have passed the 5 paper B. Later I think the B was scrubbed completely.
Then when I started the C it was a 3 paper exam. Another partial and before I could take the one paper I'd failed, the two that I'd passed were scrubbed. I passed the one remaining paper and refused to even start ISS, expecting that if I waited long enough that too would follow and be reduced or scrubbed. No such luck!
1066