uneven oven rise
I bake a very large round challah bread with a braid on top, like a crown. The appearance is always marred by an uneven oven rise, halfway through the baking time. I have Thermador convection ovens and there is only one way the bread fits in the oven. I start the baking at 400 degrees and after 10 minutes, I lower the temp to 375. I rotate the pan after 10 minutes but it doesn't help. I let the bread rise until it is double but it still rises extra on only one side in the oven. Can anyone help?