Dave, I can relate. Broken many things on pianos. The old Kawai vertical that was my home piano had something break maybe once every six months. Treble strings, bass strings, hammer shanks, keys that snapped in half. It does get very annoying when you are trying to polish music for performance. My tech said, the piano wasn't really designed to handle the music that was being played on it. Unfortunately, an upgrade was not financially viable at the time.
I've just listed to track C, but wished to comment. Very enjoyable, as always. Paraphrase of Prelude 28/24 near the end, and some very Scriabin sounding harmonies.