I have three different SRs (from yours) that work beautifully with all HFT versions.
You must try the wide angle and detail HFTs.
I treat all with a Walker Talisman.
Acoustic Revive RR-777 and/or Synergistic Research HFT /2.0/X ...
I have been using Schumann Resonators from several companies for the last few years with success. In my main two channel room I have been able to improve performance with two Acoustic Revive RR-777 units.
Recently I purchased a ten pack of Synergistic Research HFTs and installed them as recommended. It has made an improvement.
Then I decided to remove the RR-777s one at a time to see what change(s) this would cause. To my surprise the room made a big leap forward without the RR-777 in place.
My tentative conclusion is that the HFTs and RR-777 are not compatible together. I am curious to know if anyone else has had similar issues.