Update, Rusty!
I have finished the Times Cryptic 15 x15...... bar one I couldn't do ....one I would query the (strict) definition...and one where I am unsure if the word really exists!
Here goes, if you can help, please......
18a: Washers the wrong way round in gun (3-3)
?O?-P?M
No ideas here.
23a: Very simple thing for bird to catch worms, ultimately (7)
protist = I wouldn't say that this is strictly a "very simple thing"?
"protist" is the singular of "protista", which are single cell organisms, but not the most uncomplicated ones.
And regarding 9d....is there REALLY such a word as "unflappability"?
Otherwise , all OK, I hope!
I am now about to go out for a walk with the dog - still lovely sunshine, so shall make the most of it!