How to fix a hori Real Arcade Pro Ex

My stick got damaged from a fall and it is hard for me to do consistent diagonal jumps without jamming the stick to far to the right or left.

I just wanted to know if anyone had any tutorials on how to open the stick up and fix it yourself.

This is a link of the stick:

http://www.hori.jp/us/products/xbox360/xbox360_realarcade_proex/index.html

I appreciate the help.