This is a really fun hidden gem. In non-Font style you climb on vertical runnels on the boulder round the back of Transformers, but beware, it dries slowly, and is a little susceptible to erosion.
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.