2 TWU
Your post is 100% factually correct.
The only thing I would add is to say that the FMk2A was, by far, the best mark of Lightning - two cannon, two missiles, more fuel than the FMk6 (because the cannon in the ventral took away fuel space in the FMk6), less-thirsty Avon 200 series (as opposed to the FMk6 300 series) and no fueldraulic pumps - so less fire prone than the FMk6.
I have very happy memories of Gutersloh in the early 70s.