@IgorZ I'm running into a bug with the Resource Transfer GUI.  1) The Resource Transfer GUI does not find resources in components connected by KAS components. In the picture below. The GUI is for an RTS-1 on the base connected to the lander just above the crew portraits. In the GUI the LFO is only 180/220, but the resources in the upper right show much more fuel available. KPBS flexible corridors make up the connections to where the primary fuel is located with just a little in the base sec