Shame about the timing of KSP 1.4.1 - I wanted to test and approve this PR for kOS with Trajectories today: https://github.com/KSP-KOS/KOS/pull/2220 But until there's a KSP 1.4.1 working release of Trajectories, I'm going to wait.  I want to do all new code kOS work on KSP 1.4.1 and only support KSP 1.3.1 through a backport, if at all.