Ola, James and it's amazing to hear from you! Glad to hear you still think of the place!
I like the honesty in your query, but there's been no 'constructive cleaning'. However, not sure about about your original, attempted line.
JC pulled on and followed the faint 'seam' direct, up and leftwards, at the top, to the break - you may have tried to move rightwards??
I remember Bonjoy saying you thought it was one hold short of possible.
With regard to grades , JC's new routes in the Matlock area aren't yet getting many ascents. He's finding it difficult to judge, as he can only go by the way he feels on his routes.
You know all about that! Your old project, in all honesty went really smoothly, on the day, but there was a lot of work behind that moment.
Now, I readily admit I can't now, or ever, climb anywhere near this level, but know a hard route when I see it and I'm always telling him he's undergrading.
No, it's not font 8b, but re 'what do I know about grades...?' - you're dead right. JC is 6'3/4", with the right build/training regime and these routes, undoubtedly suit him.
Why don't you get over here sometime, for old time's sake. Sport has moved on a lot in the Matlock area recently, courtesy of JC!