[irc]

Yeah the X comes with little information. But bearings are very easy to install. For the diffs remove the two top covers holding the diffs in and pull the diff out. Replace the large plastic bushings it spins on with two M0-01 bearings. For the front wheels remove the wheel and shaft and replace the outside bushing with a m0-02 bearing. For the rear wheels remove the wheel and shaft and replace both bussings in the hub with 2 m0-02 bearings. Where did you get your X?