I tried to buy that but he says he has no more left and wasn’t sure if he was making more. I use a temp wood block on my rack, works fine. Now I am having a stainless steel pedestal made.I stopped using the Rigid Float after being in to Micro Seiki and TechDAS AF3P turntables, as the RF arm does not fit.
But since a short time, the German Rigid Float importer constructed a tonearm base for Micro Seiki and TechDAS:
Sonder-Basen für diverse Laufwerke
www.blackforestaudio.de
So I might consider the tonearm again, as I liked the dynamic and brute force a lot