Here is some videos that shinjnSRK from shoryuken.com shows how to disassemble a Mad Catz FightStick Tournament Edition
How to open the case
Main Printed Circuit Board and Terminal Block
Control Module and USB cable compartment
Top control panel
Removing the Sanwa snap-in buttons and replacing with Seimitsu, Sanwa screw-in buttons
Semitsu LS-32-01 (Semitsu SS mounting plate) and Sanwa JLF-P1 flat mounting plate
How to fit a Happ/iL pushbutton and joystick
Summary
Mad Catz FightStick LockSwitch++ Mod
Solderless Tricks & Tips for QDs and Ribbon Connectors