Have a question regarding the order of fuel consumption

[wildkittyv1]

Here\'s an image of the issue: http://i.imgur.com/KAEZA.png

Basically what happens, is that the cones are meant to detach after the fuel in the tanks below them are depleted, which they do, which frees up the next stage setup within them. However, the cones are capable of cross-feed fueling and end up causing their engines to drain the higher tanks meant for the interior stage before feeding from the ones below the cones. I know I could set it up differently so there is no cross-feeding going on with those decouplers, but I wanted to try using them. I have the staging set up so that the above fuel tanks are grouped with their intended engine (and I know they will still feed from them even if they\'re staged separately if there is a cross-feed), but that\'s mostly just for ease of knowing when the tanks intended to be used are empty if there is cross-feeding going on.

Any ideas on what I could do to rectify this while keeping the same parts and setup?

[Bluejayek]

Your using mods anyways, so why not go into the config file, find the line that allows the cones to cross feed, and delete it?

[softweir]

Connect fuel pipes from the bottom tank of each radial stack to the bottom tank of the core stack. That should override the crossfeed in the aero-decouplers. This has the side-effect that when the radial stacks are jettisoned the main stack will have 100% fuel, which is actually quite advantageous in some designs!

If you find it isn\'t an advantage then you can copy the aero-decouplers, give them a new name in the part.cfg file and set crossfeed=FALSE and use the new decouplers instead. That\'s how I use those decouplers.

Personally I see no reason decouplers have automatic crossfeed in circumstances when the stack they connect has an engine attached - they should only crossfeed *if* the stack is tanks only! (At a pinch I would be happy if decouplers never crossfed, but we were forced to remember to use fuel pipes instead.)