Hallo Volker,
You are right, but the pieces on the platform are not the good one. They are templates to adjust some items and to see, more or less, the result. The new parts are more shorter in front, with more place to be able to remove them and to remove the fire grate (you can see the gripping handle).These new parts will be in 4 parts: 2 on each side, away from the 'kessel', another one at the rear of the central part and the last one on front of the boiler. The length of this last one will be secured later.
Aber danke für Ihre Information.
Stef

























