[ashleyb4]

This is what it says in the manual....

About The Differential Never allow the diff to slip; that’s what the slipper is for. Before trying to adjust your diff, you need to tighten the slipper until the spring is fully compressed. Next, hold the spur gear and right rear tire, then try turning the left rear tire forward or backwards. It should be very difficult to turn the left rear tire. If the tire turns easily, the diff is too loose. To tighten the diff, line up the slot in the diff screw with the groove in the left outdrive. Place the 1/16” Allen wrench through both of these slots. This will lock the diff screw and the outdrive together. While holding the Allen wrench in place, turn the right rear tire forward about 1/8 of a turn. Check the differential adjustment again and repeat the tightening process as necessary until the differential is no longer slipping. See "Adjusting the Slipper" on the following page, and then continue from here. The final differential adjustment check should be made by placing the car on carpet, grass, or asphalt and punching the throttle. The differential should not slip (slipping produces a "barking" sound). If it does, tighten the diff in 1/8-turn increments as described above until the slippage stops. Once the diff has been adjusted, it should still operate freely and feel smooth. If the diff screw starts to get tight before the
diff is close to being adjusted properly, the diff should be disassembled and inspected; you may have a problem with the differential assembly. Refer to the assembly instructions to ensure that the diff is properly assembled and that all parts are properly seated in the assembly.
There are a few things you should know about differentials. First, when rebuilding your diff, you should always replace the small, diff nut. Second, after the diff has been run a time or two, it is not uncommon for the balls to seat into the rings and create a slightly loose adjustment. So, after your first and second runs, check the adjustment to avoid slippage. Third, remember: Never let the diff slip. Doing so can damage the diff balls, rings, and gear. Always make sure that the slipper will slip before the diff.

personally i aint got a clue just looked at the manual.

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