I've got an Export Bus controlled by a Level Emitter to throw excess cobble into a recycler. I've also just set up another to throw any more than 250 Silky Propolis into the centrifuge. But, now I don't have any more space on the centrifuge to put another. Dedicating an Export Bus to just one item is a bit inconvenient. Is there any other way to do it? I suppose I could set up the Export Buses to a row of Ender Chests and pipe the contents from another linked chest into the centrifuge. I really want to do this with dusts, so I always keep a stack of every pulverized ore and smelt the rest. Right now I just have a single Export Bus shoving all of them into a Router.