I hate to say I told you so. Sorry about that. I guess I did not comment until after you had ordered the Townsend. All those feet thingies are also garbage. To properly isolate a turntable the suspension needs to be tuned below 3 hz, three bounces every second. That is so slow you can count it.
Try this experiment. Put the turntable on the floor. If the footfall problem improves at all a shorter more stable rack will also improve the problem. Then down the line you can either replace the floor or get a Sota Sapphire, Nova or Cosmos. Easy choice I think. Hanging the turntable is another viable solution. People laugh at it, but it will reliable vanquish the footfall problem. All you need is a drill and a ladder. Get a big butcher block carving board, 8 hooks, chains and turnbuckles.