Haven't done a Paul for a while and decided to have a go when I saw the activity on here. (Did the Guardian cryptic daily for umpteen years).
Rather tricky! Got there after a kick-start on here and help along the way.
Q? The P answer - where does the 4th letter come from in the clue? I can see 'rejected class almost' but not why, say, 'almost perfect' creates the 4th letter.
Thanks.