The shell can be protected with a strip of foil.
As for the brulee, the yolks are the thickener, so you can try adding more. But also make sure that the custard is baked all the way through. When you check them in the oven, the center should be as firm as the edges. If you see a slight jiggle in the center, it's still not ready.
As for the brulee, the yolks are the thickener, so you can try adding more. But also make sure that the custard is baked all the way through. When you check them in the oven, the center should be as firm as the edges. If you see a slight jiggle in the center, it's still not ready.