JR9-00012 XBox 360 Wireless Controller Hacking

Hey all,

Need help hacking a JR9-00012 XBox 360 Wireless Controller. Purchased recently and didn't know that MS had changed the design. Want to be able to connect arcade buttons to the left and right button as well as one of the analog clicks. Easily attached to all D-Pad, A/B/X/Y/Start/Back/Guide buttons but need three more to complete my arcade stick.

Has anyone attempted this before/are there existing pcb diagrams?

Any help appreciated.

Cheers,

Mark