^^ Hi
Just push your stick a little and turn it a bitt left and richt, do it a few times, and you hear / feel a click, and it back in its place ^^.
It happeen also for me, i did a few mods on the controller, and some of them made it loose (when i did a few 360 rotations).
now i have a new mod whit a homemade stick and some foom (with some pencill parts and a ear protection plug) and i never have these problems again ^^
i gonna post some pics of it soon, it has a great grip and plays very good.
Greettzzz Jaylink