Fix the telescopic runners
( take the left side for example same for right side)
1.
Put the point A and B of the telescopic runners horizontally on the outer wire.
2.
Rotate the telescopic runners anti-clockwise(clockwise for right side) by 90 degrees.
3. Push forward the telescopic runners, make the point C buckled onto the lower wire
and the point D buckled onto the upper wire.
1
A
1
2
B
27
3
2