Weights on top of equipment to dampen vibration

Most (if not all) of those in the vibration control business seem to advocate NOT stacking components w/o some kind of vibration control between them because (they say) this would cause the stacked components to share all the vibration.

I was looking at mapleshade but it doesn't look like they are heavy enough for my needs I need 8-10 pounds

How about something like the HRS dampening plates on top of my transformers would this work just as well

How did you conclude you need 8-10 pounds?

I tried various weights on the transformers and what sounded best to me within this range

Rubber-coated three-pound handweights work very well!