Filling speaker Stands?


I have a modest system. Continually look for ways to improve it's performance even to a slight degree. I have read many posts about improvements than can be achieved by filling the hollow spaces of some speaker stands with some type of material....sand, kitty litter, lead shot, and some others. Here are the stands I have......
https://www.sanus.com/en_US/products/speaker-stands/sf26/ 
These stands are of metal construction. There are 2 upright support tubes which are approx. 2" diameter. The stands sit on a carpet floor with spikes. On the top plates are a layer of Sorbothane and PSB Imagine B speakers sit on top of that. The 2 metal supports are attached to the base and top plate with just threaded holes about 1/4 " diameter. Pouring some type of dampening  material would definitely require a funnel.
The reason I ask this question is that, when I thump on each upright post, it rings for several seconds. A dampening fill would minimize this but would filling those posts really benefit the speaker performance to even a small degree given my modest setup? I don't know. Probably, few have experimented with this type of scenario.Thanks for any advice.



jrpnde
This thread was of practical use with a number of good-intended posts until the post above.
No, glupson, it was actually your post that had no bearing on the case. 
Number 8 or 9 lead shot ( can be mixed with sand ) is still the best for both minimal resonance, and stability, ime. Enjoy ! MrD.
The problem is, as is so oft the case, “minimal resonance” is not really the name of the game. It’s sound quality. If you cannot hear the detrimental effects of lead on the sound then you should probably hang up your spurs. With an objective ear, not a presupposing ear, you should be able to hear how the entire base spectrum suffers. I admit lead seems like such a great idea. Not too soft, not too hard. Pierre Sprey of Mapleshade swore by lead and would carry a couple hundred pounds of the stuff out to Las Vegas for his exhibit at CES. Then one day Karakal-boom! ⚡️⚡️He finally realized lead was hurting the sound. Sometimes it takes a while for it to sink in. 😢
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