Overhanging sitstart boulder. You sitstart and exit in orange n°16: La Voie Dure à Bras. It helpt my not to mantle up in the heel, but just to use it to hold my position and move my recht hand to the undercling. Easy steps to the top, but a bit sandy.
On the way to Gaia (on the top of the ridge) you will pass this low funny boulder. It's a sitstart boulder and you can use the left arete. You start wit the left hand on the arete and with the right hand at a crimp. For the topout I use a very tiny small pocket with my left finger to help me pushing out my left leg. That's making it easier for me. Just right to this boulder you can find La Mire à Belles 6a. Sitstart with two crimps, take the undercling right hand and exit with a mantle.
Very low, but funny boulder. Start at the left and exit at the left. There are many ways to mantel up. Moving up the right hand so I can push made a difference for me.
Rain sucks, but broken holds suck even more. Remember, never climb on wet rock in Fontainebleau.
The sandstone becomes brittle, and pulling on it will ruin classic problems. Drying it doesn't help, because it's still wet and weak inside.
All you can do is wait for better conditions.