The video below gives you a brief walkthrough on installation. We now include timing shims in several of our designs. They are also available on our website for sale if you need them for other sabers. Timing shims are used to adjust the direction your emitter or pommel faces. So if you have a slant emitter and want the slant to face the front, rear, or side you can now do this. This also makes it to where we can get away from 1 piece designs for emitters that require alignment and can offer our customers more options for customization. CAUTION: Be very careful when handling the shims. They can be sharp since they are cut so thin.