How do you put the wireless mouse back together?

My wireless mouse fell off the desk. The left button was stuck because the spring came unsprung. I opened it up to replace the spring. I need a schematic on how to put the spring and hold wire back with the mouse wheel assembly. If I leave the spring and the hold wire out and put the mouse back together it works. That's the good news, the bad is that no one at customer support knows how the wheel assembly SHOULD go back together properly. Does anyone have a diagram? Thanks!