I was trying to implement fancy module config nodes the way stock modules have them, like the PROPELLANT blocks in ModuleEngines. I have no idea why, but it seems near impossible to get OnLoad to cooperate with us on our own modules. It works fine in the VAB, but as soon as you enter a flight scene, the ConfigNode you get is the one from the Vessel, not the part configuration. For many things, this is completely useless. So, after much toiling and consumption of all my remaining alcohol, here's