Did anyone notice that Ranger's RCS ports placement is actually quite sub-obtimal? No matter which direction you try to move, in addition to the desired vector, you translate downwards a little(quite a lot, actually), because the RCS ports on Ranger are almost exclusively placed on its top side. To top that, some of the RCS ports are actually angled slightly, not perpendicular to vessel's body. Pitching/yawing with RCS on also generates hefty amount of thrust, especially when you pitch down. This, and the fact that the docking ports for the Rangers are angled, makes docking the Ranger to the Endurance quite annoying. Fixing this can't be too easy I guess, considering the highly geometric shape of Ranger.