I enjoy doing crosswords from newspaper archives.
In a January 1935 crossword from The Scotsman newspaper, the answer
to an ambiguous clue could have been INDOLENT or INSOLENT.
Next day, D/S was neatly squeezed into the third square of the solution!

Come on FT, for YANGTZE, give us S/Z in the sixth square tomorrow!

I’ve recently been pulled up on a CD for TRIUMVIRI, which could – as I now realise – just as easily be TRIUMVIRS, especially with the last letter unched. ‘Long distance runner in the East’ I suspect might also be criticised as there are other long Asian rivers: Yangtze is the longest, however.

7dn: I wrote YANGTSE. Thanks To Miche@3,4 for pointing out that there are alternative spellings. Given that the alternative spellings differ in an unchecked letter, I feel that the answer requires a full cryptic clue with wordplay that removes the ambiguity.

28ac: Here we have exactly what was needed in 7dn. The use of an anagram prevents (or, at least, should prevent) anyone from mis-spelling Sir Alf’s surname as RAMSAY.

You’ve written YANGTSE at 7d. So did I at first, but it’s YANGTZE.

5d is an anagram, not a reversal.

I didn’t get 16a. Sometimes it’s the little ones that defeat you…

Re 1A the RA (abbreviated) is to be found in the middle of “paRAde”. Nice one!