Next insert arch supports
Insert the green arch supports from
the outside
Inside the tunnel you use the black tool to attach nuts to the
green arch supports (in picture right done, left not done)
Finally, secure head, tail and tongue
Use end attachments to secure both sides of the
head and tail
use 2 nuts each to secure in place
Use a nut to secure the tongue to the head
Double check all fastenings,
Then enjoy Feber Gus!