Actuator assembly instructions - band tool cover not shown in render
The band tool cover is included in the initial parts render and briefly mentioned in the written instructions, but is never shown in the band tool step render, so it's easy to completely miss and leave unused when wrangling the Viton bands for the first time. This makes it much more likely that the band tool will break when used alone, and Viton bands probably won't stretch evenly over both hooks first try.
Currently at n = 3 assemblies I have witnessed where this has happened.