Replacement Sonus Faber grille strings?


Hi guys, the grille and stand strings on my Sonus Faber Guaneri Evolution speakers are beginning to sag.  While I know its a straight forward task to retension the grille strings, I am just thinking that at some point I will need to replace the strings. The stand strings look a bit more difficult as it will require me to dismantle the stand.  

Of course I have no intention of paying the ridiculous prices SF wants to charge me.  So does anyone know of a source for the string?
tboooe

I received my re-string kit today from Fine Sounds. Impressive service. I noticed that they are still Sumiko and also the McIntosh group. I received four packs of the strings, presumably two packs per speaker grill?? I also ordered the strings for the stands, which have to come from Italy and will arrive later. 

Received my new strings in February.  Spent the afternoon restringing my Stradivari.  It's time consuming, but a great opportunity for some listening.  Me:

  • Michael Kiwanuka - Small Changes 
  • Bob Dylan - Blood on the Tracks
  • Elbow - Seldom Seen Kid
  • David Bowie - Ziggy Stardust

I bought some wood and strung in the sweet spot

 

I am currently successfully restringing my Sonus Faber with the string grills. I am using this elastic cord, https://www.amazon.com/dp/B09TFW5W1C?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1. My initial concern was finding a sewing needle small enough to fit holes in the brackets while having a large enough hole to feed the cord through. I could not thread the needle! However, the cord slips surprisingly easy through the holes! But something I did not anticipate was the tension on the two brackets as i added the elastic cord. I have jury rigged a device to hold the brackets apart while they are jammed into some packing Styrofoam.
Dexter Gordon is assisting in the background!