1) First of all, remove the body and the interior part from your Charger and look the chassis: in the rear part you can notice there are two tapping screws. Using a screwdriver, unscrew them.

   2) Now, try to remove the rear axle: to do this, remove 2 little pieces of fused plastic that keep the axle attached to the chassis.

   3) After this, trace with a felt-tip pen a nick of about 3/4 mm. The colored piece will be removed with a hot cutter (in this way, you will easily cut the plastic).

   4) This is the result obtained after the cut. If there are some imperfections, try to correct it with a little cutter.

   5) Now, use the original 2 tapping screws to recreate a perfect screw thread, then remove them and reinstall the rear axle on the chassis; screw it on the chassis and now you could notice the height is perfect.

   6) Now, try to remove the front axle: using a screwdriver, unscrew the 2 tapping screws indicated by the arrows.

   7) The front part is a little more complicated respect the rear one. Take a careful look of this part, before start: we need to modify the supports indicated by the arrows.

   8) Now, look this sketch: it represents the front cross section. On the left there is the situation before the modification, on the right there is the situation after the modification. As you can see, we need to remove a share of the chassis supports and then we need to create a shim on the inferior crossbar (indicated with the red color).

   9) Trace with a felt-tip pen a nick of about 3/4 mm. The colored piece will be removed with a hot cutter (in this way, you will easily cut the plastic).

   10) This is the result obtained after the cut. If there are some imperfections, try to correct it with a little cutter.

   11) Now we need to create the shim on the inferior crossbar. To do this, we can use plasticard: with this material, we need to create a shape with the same dimensions of the support and then we need to recreate the hole to host the wheel's pivot. After this process, glue the new shims to the inferior crossbar and then reinstall the front axle on the chassis; screw it on the chassis and now you could notice the height is perfect.

   12) Finally, we can see the comparison (on the rear part) between the original height and the final height obtained with this simple tip.

   13) Instead, here we can see the comparison (on the front part) between the original height and the final height obtained with this simple tip.