[Where to get the white foam for gaskets for OLA tweeters?]

I have found that there is a similar material thats used for packing.  I have received items wrapped in foam sheets anywhere from 1/16” to a 1/4” thickness.  I save these because I have 2 sets of Advents one previously redone and one in the works 

[Original Large Advent Tweeters]

What are you asking $. What are the ohm readings 

[wall mounting OLA's]

Years ago I hung mine from the ceiling.  I made them with a 3/4” rope into a large hoop to wrap around the speaker on near the edges.  They were hung horizontally mounted to the rafters.  I was able to adjust the angle then.  Saved space and sounded good.