Next up in this series of articles is the differential setup. The differential in a 2WD Mini-Z is super important -- while a bad diff or a badly maintained diff will not make your car undrivable (as bad tires would), a bad diff will hamper your car's ability to carry speed through a corner, and hamper its consistency in handling your inputs to the car. So you ALWAYS want a smooth diff; you can leave it 100% open and free or you can adjust its LSD effect using diff tension, thick greases or even...