Gershman Avant Garde Upgrade?


I'm the proud owner (purchased here) of a pair of Gershman Acoustic AG's that I love.  I just spoke with Ofra Gershman who mentioned that they have an upgrade option for the AG's that if I understood correctly, redirects the bass making it less muddy, in addition to full replacements for the drivers, woofers and tweeters.  Has anyone done this upgrade for the AG's and if so, what is your impression of the change in sound?


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... Just to be clear: Avant Garde is a 3-way speaker manufactured by Gershman,  and Avantgarde is a manufacturer of speakers with horn-based  components. They are 2 different things; this forum is about the Gershman 3-way Avant Garde speakers...
jk2011 I also intend to modify my Gershman Avantgarde.  Mine is in between RX20 and R1 model.  Did you do the work by yourself, or you gave them to a technicien ?  Did you change all the CO: tweeter -mid - bass ?  Did you change also the internal wiring ? It cost you around how many $ ?  Would it take long time for break-in in the new CO components ?  Did you use a particular "brand" for  the CO parts ?  Thank  you

As an owner of RX-20's I wanted to revive this thread if possible.  I fond these speakers absolutely amazing and would love to improve their performance if possible.  Is the upgrade still available and is it done by Gershman or can be completed by simply replacing parts?