Mods for Avantgarde speakers

I have had Avantgarde Trios for about eight years. They play music with the types of amplifiers that I enjoy, in a way that I like more than other speakers that I have heard. I would like to hear from others that have modified their Avantgarde speakers, what they have done, and with what improvements. Damping, x-overs, cabling, etc. are things that I am interested in.