Raspberry pcb's joystick cap...

[tonyStark]

Hi

I'm on a gameboy zero project and i want to use this rapsberry pcb :
The kit includes a soldering joystick but problem: it comes without cap. I thought to solve the problem with a cap of psp1000 + 3ds :


...but finally it does not hold properly

My question: what type of cap should I use with this type of component?

Thanks in advance