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7. Drive Wood Screw through Stairs as shown.
8. Slide First Floor into slot in Left and Right Sides,
Larger hole facing down. Secure with wood screws.
12. Slide flat edge of Back Roof in slot in Front Roof
ensuring it is flush on both sides and that slots are
aligned.
9. Position Stairs with as shown, lined up with Stairs
with Wall above. Drive Wood Screw through First
Floor into Stairs with Wall as shown.
11. Slide Third Floor into slot in Left and Right Sides,
with the off center stair cut out towards the left.
Secure with wood screws
10. Drive Wood Screw through Stairs as shown.