Thanks for the quick response. It's this movement and the 4th that I'm having some difficulties with. I agree with everything you said.
I have to say that it has been my experience that I can get through a lot of pretty difficult Liszt fairly cleanly, but when I come to some of the bigger Alkan pieces, sufficient technical and physical stress is placed on me that things can start to go wrong. (I've played/looked at the Symphonie, Festin d'Esope and the transcription of Beethoven's 3rd piano concerto, with mixed results).
Anyway, thanks again. Your input is appreciated.