Traduzione in corso passo 8
Note: from here on reassembly is critically dependent on the correct alignment of parts. It is highly recommended that you practice disassembly and reassembly of each stage several times before going on to the next.
If you find things don't fit, don't panic, check the orientation, fiddle it bit, and if necessary, put it aside and come back tomorrow. With patience, it will go back together again!