The ridge of the cone that contacts the underside of the biscuit must be flat. Place a piece of 180-grit sandpaper on a flat surface and level the bottom of the biscuit. The saddle on the biscuit should be slotted and shaped in the same manner as a spider-bridge saddle. If the slots in the biscuit are too deep or wide, carefully remove the saddle from the biscuit and make a new saddle. Once you have trued the cone, biscuit seat, and biscuit, attach the biscuit to the cone using the small wood screw.
Some pros attach the biscuit to the cone with a thin bead of glue.
The system includes an onboard preamp, biscuit bridge with Highlander coaxial transducer inlaid into the underside, an external power supply, and a special stereo cable. These pickups are quickly becoming the favorite of recording and performing musicians. They're easy to install and work great with guitar amps and PAs, without additional preamps or impedance matching devices.