<--- Scott Manley's tutorial (its from .18, but should still work)And as for RCS placement, it depends on the craft size. If it is just a command pod-decopuler-asas/sas-rcs-fuel-engine, (so a station shuttle) I just put RCS in the middle using 4-way symmetry. If it is larger, like a long power station, I put (using 4-way) on set on the top, and one on the bottom. Depending on velocities, it CAN be possible to get too much velocity with RCS. But the wonderful people at Squad gave us this technology of.. QUICKSAVE. So yeah, quick save A LOT.