Part.fuelCrossFeed not being honored

[linuxgurugamer]

I'm working on a mod which will provide modular segmented SRBs.  I'm having a problem with the fuelCrossFeed flag.

The mod looks at all the parts stacked above the engine, and when it find a part which is not an appropriate tank, (ie:  no solidFuel), it disables the fuelCrossFeed flag for that part.  In my tests, I have (from the bottom up):

1. SRB engine
2. SRB tank 1
3. RC-001S Remote Guidance Unit
4. SRB tank 2

 

So the engine is supposed to drain SRB tank 1, and not SRB tank 2.  I've verified that in flight the fuelCrossFeed flag is set off on the guidance unit, yet fuel continues to be drained from SRB tank 2.

So how can I get the fuelCrossFeed flag to be honored?

I see that there is another field referencing crossfeed:

string Part.NoCrossFeedNodeKey = ""

but can't find any information on it

 

Edit:  I've also tried setting the attach node variable:  ResourceXFeed false, no change

Edited September 8, 2019 by linuxgurugamer

[Xyphos]

iirc, when the fuel priority system was introduced, the fuel system changed and you may be using a boolean flag from the old implementation.

and an unverified educated guess, NoCrossFeedNodeKey would be the Key Identifier to the parent Attachment Node the tank(s) are connected to.  

Edited October 1, 2019 by Xyphos

[linuxgurugamer]

Well, I've stopped trying to use the crossfeed in a way it wasn't intended.  Doing it differently now