Step 5: Plug E into U shpe tube F, make sure the snap buckle is locked in place as Fig 5 show.
Step 5-1: Insert another side of E into D/D1 as Fig 5-1 show.
Step 6: Connect the upper of M to D/D 1on G with AA/FF/HH as Fig. 6 show.
(Note – DO NOT fix another side of G in this step)
Step 7: Unscrew the nut on U, have U through D/D1 and then screwed as Fig. 7 show.