Hi Glyno.
No difficulties other than the couple I have mentioned namely
1) my short legs making it difficult for me to get down on the other side of the chockstone. I don't think the chockstone is new as I have seen it on other peoples TRs and videos when I have googled.
2) The other was the slight veering off route where we lost our tail - it was fairly stony underfoot here (not scree-like stones, but not steep so not precarious) so perhaps there had been a bit of a slip here. If I can get a geo tag from my photos I might be able to let you know where that is exactly.
The section going up the side of Cambridge Crags and Flat crags is hands on rock and clambering. There could well have been a slip there, but nothing is left in a precarious position.
I can't say any more than that, as I haven't been that way before.
I do recall also reading about Lords Rake and the chockstone having fallen or something similar.
A mystery!!!