When in orbit with the CSM still stacked with the
Saturn V SIVb stage the APS thrusters are in the wrong
place, and if you save to a scenario file they have a
marked tendency to turn on when you reload.
The former is probably my fault, no idea about the
latter. It seems to be random: some times you load the
scenario and the SIVb is spinning with thrusters
active, other times you load the same scenario and it's