Untilted AKA Mr. Bubble Sit Start

Just a lil sit start to the classic Mr. Bubble Slab, about 7 feet to the right of the black knobby slab, and sit under the mini-roof. Start matched on an obvious pinch hold, do some footwork reminiscent of the McK classic of a similar name, move out left to some sharp-ass holds, and work your way up the ridge til you top out on the slab.

It is unlikely that someone has climbed this before, because the river has been slowly eroding the base of the slab to reveal this mini-roof, but if so, please let me know. Excellent problem but sharp!

The grade is approximate, please give opinions.

Downhill side of the boulder, near the river banks. Start in between the tree and the boulder, the pinch undercling block should be obvious.