I really liked your stand, until I read that they set you back. I thought dampening marerial help tame the vibrations. But looks like something else went wrong. Hope you can fix them and make the sound awesome again.
I am assuming that you are using Rhumba with Pass and Aerial? Can't help it, but I really like your stand, since it is not tall and accommodates the gear nicely.
Have fun and enjoy your music.