I think you're probably right about 8d Simond9x.
Now finished, excellent puzzle, a fitting finale from Dysart. 'isolated in May' (4606) remains comfortably in my top 5 Listeners ever. A work of genius.
Farewell and thanks also to JEG. Can't be many people put that amount of work into a single unpaid job anywhere in the world ever. Unbelievable effort.