Say I have solid rocket boosters attached by radial decouplers. I have the order of the stages / decouplers right according to my plans. In flight, I jettison the decouplers to remove the solid rocket boosters. Nothing happens. There is the noise of the decoupler detaching, but the boosters never fall away. Even the post flight analysis states that the boosters separated, when in reality they stick to the rocket and never fall away. Any ideas what's happening? I'm positive that the stages are in the correct order (on the right of the screen in the assembly building).