Gunks: Lost City -- Crack to the right of Gravity's Rainbow?

Hey there.  For those that know, what is the grade of the crack just right of Gravity's Rainbow on the corner of the big block?  My son is working GR, that I have no chance of doing, but I'm looking at the 5.10-ish (?) hand crack on the corner of the block.  Maybe I should sack-up, grab a bunch of red, gold, and blue Camalots and find out   Thanks.

If you're talking about the line to the right of GR, the one that has something of an alcove part way up, I'd call it 10a or maybe b. Bring a 4 or 5 inch cam for the top part. I've never heard a name for it, but I call it Gravity's End.

Easier 10 is about right. If I remember there’s some looseness up there to contend with. 

Thanks to both of you guys