How to stop fuel flow between 2 parts?

[OrbitalEscape]

Is there a way to write in the cfg file to stop fuel flow between 2 parts directly touching each other?  Like if you have 2 fuel tanks stacked on top of each other it acts as one fuel tank but i want them to be separate (the mod I am developing has 2 stages with engines built into the fuel tank but the 1st stage draws fuel from the 2nd)

fuelCrossFeed = false  doesn't apply here because that only stops fuel flow through a part (when there are 3 parts stacked the middle one will stop fuel flow between the top and bottom)

Thanks for any help!

[sebi.zzr]

It would be really helpful,if you could show us some pictures.But you can try to use: 

resourceFlowMode = STACK_PRIORITY_SEARCH

in ModuleEngines.Look at rapierEngine.cfg for proper use.

Edited January 20, 2016 by sebi.zzr

[OrbitalEscape]

That was the right command to use, thank you!!

I actually used  resourceFlowMode = NO_FLOW

This code wasn't on the KSP wiki CFG page but after searching its in a github page

 

This is the mod I'm working on, as you see in the pictures the engines are built in and I was also making the decoupler built in so there's 3 parts

Edited January 20, 2016 by OrbitalEscape

[Mecripp]

10 minutes ago, OrbitalEscape said:

That was the right command to use, thank you!!

I actually used  resourceFlowMode = NO_FLOW

This code wasn't on the KSP wiki CFG page but after searching its in a github page

 

This is the mod I'm working on, as you see in the pictures the engines are built in and I was also making the decoupler built in so there's 3 parts

To stop flow wouldn't they try

resourceFlowMode = NO_FLOW

or 

resourceFlowMode = STAGE_PRIORITY_FLOW

?

If it has a decoupler then

	MODULE
	{
		name = ModuleToggleCrossfeed
		crossfeedStatus = false
		toggleEditor = true
		toggleFlight = true
	}