Hi everyone, I've been having an issue with transferring fuel between tanks in the way I want it to. Pretty much, I have one large tank surrounded by four other tanks. Each tank has its own rocket, and I want the large tank to transfer fuel to the other 4 tanks as they use up fuel. I used the following configuration: ...............[2] ................| ................^ ................| [5] --<-- [1] -->-- [3] ................| ................v ................| ...............[4] Where [] is a tank, and ->- is a fuel duct (with corresponding direction). However, lets say that the rocket at tank 2 is being used, the fuel in tank 1 will stay the same while the fuel in tanks 3, 4, and 5 are being drained! I only want the fuel from tank 1 to be transferred, and I'm not really sure how to achieve this. Any and all help would be really appreciated!