I think the old guide book put this at 5.8 and the new one has it at 5.8+. If you have trouble hand jamming and don't know how to smear, it will feel more like 5.9.
P1: Follow the left-arching finger crack past a roof and up to a belay ledge. There is an anchor just before the roof but don't stop there, it's cheating! Finish by turning the corner and heading up to another set of chains. 5.8+, 70'.
Location
50' right of Bonnie's Roof at a left-facing corner.
I have no trouble hand jamming or with corners, but I still call Groovy 5.9. The initial corner is quite straightforward, and is not the crux. Moving up into the traverse, and getting across it, is steep (and awkward) climbing on a few not-so-great feet, until you've moved past the sling salad. These moves add up to 5.9.
Carefully inspect the sling salad rap station above P1: there are sharp edges in the constriction that's slung, and over the years I've seen it saw through a few slings. Hopefully the Preserve will add bolts here eventually, as this is an objectively more dangerous rap station than many others.
The protection only lists to #2. Every time I do this route my #3 finds a home and I'm pretty certain that I could get a #4 to go in the traverse crack with little trouble.
There's a really good 10a variation with decent gear that goes straight through the roof. You get all of the crux moves of Groovy plus another 10 or so feet of interesting climbing after the Groovy crux instead of the 5.3 finish after the traverse. Just be sure to appropriately sling your gear under the roof to avoid rope drag.