Interesting thread.
I own a Lyra Kleos which is mounted on an upgraded Classic 3 tonearm and base. Of course, like most VPI arms, the Classic 3 arm is a unipivot.
Are you saying that VPI unipiovot arms and the Kleos (or Delos) are not a good match?
Admittedly, I never heard my Kleos on another TT, but it seems to play well.
Thanks
BIF