Same issue with all the ones my group got.
FFG customer support said sorry nothing we can do it is within range of acceptable standards and still fuctions as intended (I disagree).
My fix:
Dab and rub super glue on ONE of the flat surfaces of the male insert end. (The insert peg looks like a slice of pizza).
Let it dry and you're good to go. Adds thickness and friction
You are stuck using that peg only but it's better than gluing it in and being SOL with storage
Edited by Yogibaer13