Joystick parts in Seoul

I’m studying in Seoul for the summer and recently purchased a Joytron 3 in 1 arcade stick in yongsan. Its a pretty good stick but i would like to modify it with some pro parts and an 8 way joystick. I was wondering where i could go in Seoul to purchase parts?

I don’t think hes in Seoul, but Laugh on SRK is in Korea, and has pro parts :smiley: