I'm eagerly awaiting the delivery of my new speaker stands that will be used to sit my new 626R's. In preparation for the delivery I've purchased some steel shot, two 20 pound bags of the stuff. However, I've just discovered that the stands I've got ordered take about 50 lbs each to fill, of either sand or shot. I can't see ordering another two bags of the shot at $50 per bag, so I'm going to suppliment the shot with sand. Question is, does it matter how I fill them with each? Should I use the sand at the base, pouring that in first, and then topping it off with 20 lbs of the shot in the top portion. Should I do an even mix of the two throughout the fill cavity. Or does it really matter?