Travelling in New England and working, now and then, on clues on screen and a hand-drawn grid. Stuck on last two in SW.
For 20d I have "A???A?" and I think the answer needs a slice and that the definition is the last two words of the clue. For 23a I have "?A???O?r?" and I think I've used up all my across slices. "Racegoer" might fit but it doesn't convince me for parsing - and it doesn't work if I'm right about 20d.
Any steers?