its in the alternate section with this
"Redesigned during production.
There are at least 2 different versions of instructions for this set. The differences
for the second version are indicated in this inventory in the Alternate Items
section with Match ID 99.
Quick overview of redesign: Two light bluish gray 6536 Technic, Axle and Pin
Connector Perpendicular are replaced with two light bluish gray 44809 Technic,
Pin Connector Perpendicular 2 x 2 Bent."
note