Print triggers on their side for best curves. To assemble place board on first and align the small pegs, may require a little wiggling. Screw in the first two middle screws first.

 Add triggers using screws from underneath the skates from the original mouse. All other screws will be the ones from dissasembling the rival 3. They are the screws with the premade washer. 

The battery holder goes last. The battery connector will be salvaged from the original mouse and you will need to use the white wire for power and the ground stays the same. Ground goes towards front of mouse and power towards back. You can cut the ground plate in half since we will only be using one battery. If you want to leave it in-tact that is fine as well. The dpi button and side buttons are removed so change dpi previous to dissasembly. 

Use ABS for strength and lightweight.