stretch build instructions

One of my teams took on Stretch. The instructions were clear but when they finished the top would not stay connected to the base. then the top piece would not stay connected to the base. They were told to reinforce using different connectors trom the ones that came with the instructions. Also, that top piece is supposed to connect to the claw piece and every time the arm moves up or down the top bar pops off. pleasehelp

Recheck the entire build. If any of the lift pieces are out of alignment, components will detach.
We had similar issues on our first Stretch build.
We saw several Stretch builds working well at last week’s league event.