weird staging behavior, rockets decoupling with no decoupler

[xcorps]

My lifter stage is comprised of a twin board in the center with 4 twin boars attached radially via the modular girder segment. I have attached a kickback to each of the radial boars via a TT70 radial decoupler. When the the Kickbacks run out of fuel, I stage them off. The problem is that the 4 Twin boars also separate from the girder segment, even though there is no staging device. They continue to burn, and the stage menu shows their fuel status, even though they are no longer attached, but mechjeb does not report their fuel any more.

Is this a bug or what?

[Feradose]

Did you try attaching more struts? It sounds like a structural failure

[xcorps]

I have it strutted 6 ways, total of 24 struts on the Twin boars.

EDIT: Fixed. The fins on the twin boars were clipping into the SRB. The boosters were yanking them off.

[Feradose]

And did that work well? Or is the issue still going

[xcorps]

It worked, I added a modular girder segment to the radial decoupler and got separation from the winglet, all is well.