Re-seat the stones

Pull the stones forward and centre them

The manual (pp. 20 and 21): the stones are "not fixed inside the oven" and can shift backwards, in transport or use.

1. Let the oven go cold.
2. Lift out the burner guard and the duct grate.
3. Hook the stone adjustment tool over the back of one stone.
4. Pull it forward until both stones sit tight together with no gap at the front.
5. Centre the stones in the oven.
6. Fit the burner guard on the left and the duct grate on the right.