A problem with crumbling and regular FOF's

I have one three FOF's combined into one. Two regular shadowcasting FOF's on one side and a crumbling, respawning, bobbing one on the other. The tags are set to the right platforms, but when I step on the crumbling one, the whole thing falls; including the regular FOF's! Any way I can fix this?

If it helps, I have it set so that the three FOF's are over water.

This is because an FOF's vertical dimensions are determined by the control sector in real time. Therefor, if the crumbling FOF falls, so does the control sector, which in turn alters the vertical dimensions of anything else using that control sector.

You can fix it by giving the crumbling FOF its own control sector. In addition, floating/bobbing FOFs always need to have their own control sectors, even if they are identical in every respect; otherwise, they all move as one.

Sweet, it works now. Thanks.