Stands for Tekton impact monitors?

Just got half of my Tekton Impact Monitors. The other one got delayed somewhere in the abyss of FedEx. I have not had a pair of monitors in quite some time. I got a pair of the Pangea ds-400 stands to put them on. They seem a little undersized and maybe not as stable as I would like. Filling them might help. I was wondering what other people are using with their IM’s?