The crux for me was reaching the last left hand hold before the top. I'm a little taller so the right heel hook (as seen in the picture) and long reach just barely worked for me. A much shorter friend of mine did it by using what I call an egyptian (right foot as high as possible and left foot on the spikey crimp, with the left hip turned to the wall). Hope this makes sense and helps :)
Unlike on the bleau.info video I went up left hand first. Left foot on the good foothold and right foot just against the rock. The key for me was to do the sit start without a crashpad because my right foot kept dabbing on the pad after the first move. Awesome area!
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.