In reply to Alex Riley:
Hi Alex, I was messaging someone who might have been with you when you were trying it. If so, it sounds like you were climbing the top arete on its left, when the route was originally climbed direct from the Cockblock gear up the steeper right hand side of the arete. Climbed this way, the crux of the route is inescapable until you have almost finished the easier climbing at the top. Excellent moves with pinches for your right hand and the arete for your left hand and heel.
Caff, Andy and I all just started up Cockblock rather than the independent start Alex climbed. Maybe this would help set you up better for the top. The independent start does feel squeezed in.
There is a photo of Alex on the top of the route on the UKC route listing.
Post edited at 08:50