I want to run a Trail Tech or Endurance speedometer/odometer in place of the factory odometer. In removing the speedo gear drive box on the front axle, I see that the bearing has the dust cap built into the speedo drive box and not into the hub. How can I replace the the drive box with a simple spacer (like on a YZ) and also have a seal over the bearing. The side of the bearing race is flush with the edge of the rim, not leaving any area to install a dust seal. Any comments are appreciated.