ELAC Super Tweeters:Isolation Tweaks?

Have any owners of the Elac 4PI Plus.2 Super Tweeters experiment with any isolation under them on top of the main speakers?
IE: Better rubber feet,wooden blocks,isolation bearings,audio points on discs.Etc.
OR: possible different location on the main speakers.To the front,middle,rear?
OR:just place to the front and leave them stock?
I just picked up a pair about a month ago and have them settleing in along with the wire.I have to admit they really sound great and do what is advertized..I have them to the front set at 15kHz and -2 on the sensitivity.