Sad news to hear.
Years back I owned many of Paul’s Kaplan HE power cords and I have a story: Evidently there was a member here that was trying to steal his PC ideas or replicate his cords or something like that, and I got wrapped up in it by sending Paul a cord to update/upgrade, that I had purchased used here on AC. He informed me that the PC was either altered or not made by his hands and I was accused of being a part of it all... Many months later, I got a call from Paul. He was simply calling to let me know that he knew I was not involved. I thought that was very nice of him to take that time to let me know. We didn’t know each other and I’m an unaffiliated nobody in audio, just an AC member, so he didn’t have to do that...but he did.
Rest in peace, Paul.