Best vibration isolation for speakers on carpet?

Hi All,

So I am awaiting my new Revel Performa3 208's and I'm tired of the normal spikes that come with speakers. No matter what I do I can never seem to get them all level. My carpet is medium to a bit on the thicker side. Any help on carpet spikes or any other ideas on how to isolate the speaks but also so they'll finally be balanced? Granted it's not like any of my towers have ever been in danger of tipping over, but I've never been able to get them all level. 

My dealer said at 80lbs the Revel's should be fine on carpet without spikes but I want to get this right from the get go? Any help/advice is greatly appreciated-thank you!