Mark all adjacent parts for reassembly. Remove all slotted screws on zoom body.
Note that there are two lengths. There are three concentric tubes. The center tube
holding the lens elements are split into two assemblies and move independent of each other.
It is recommended that the position of the two outer tubes be taped together for easier reassembly.

Upon reassembly, if zoom is not smooth, switch bushed screws of the same length. Use thread locker
and tighten securely.