Information/spray:
#SamMarks came along for a repeat last night and opted for a quick headpoint. Andy Hobson has also had a rope down it. Between them they seem to agree that it's more worth E5. The phrase "you couldn't grade flour" may have been used (I mean, who can?)
There's a video and photo here which show it from a different angle. Revisiting it, I don't think I would highball it. The nature of the moves means you could possibly fall off awkwardly, and it feels high at the top. There is a landing zone but the landing quality on either side is poor and if you were to overshoot the landing you could end up in bother. But that sort of statement is made to be proven wrong so maybe it's worth a look.
https://www.instagram.com/p/CNnssvhjTrz/There is normal sized kit in the big break. Slightly higher is the crucial tiny cam that goes into a narrow slot at the back of a slightly broader opening. The gear we've used is a discontinued Wild Country Z3, which the spec lists as having a range of 8.5 - 12.2mm. This is equivalent to a 0.1 or 0.2 modern Zero Friend or a Dragonfly 2.