I wrote some detailed notes in the Tahune Hut log book after the climb.
A lot of people get confused on the lower pitches (which are easy) then it gets hard... I'd suggest you'd want be be leading around 19/20 on trad routes to give yourself a bit of a margin. A grade 15 move can feel bloody desperate when you're run out on shattered rock (well at least that's my experience) I found the climb a whole lot harder and more desperate than Flight of the Phoenix at the Bungles.
One of the descriptions we had (Thesarvo?) refered to pitons which were either gone or just rusty stumps, whereas I remember a few pitons not mention in any descriptions.
BTW I felt buggered by the walk in (in 30+degree temps) and didn't really recover from that.