Sounds like you’ve had better luck than I did with that movement
i bought a Jacques Etoille tourbillon about 15 years ago that had the same Progress (later STT) tourbillon. Alas, I had nothing but issues with it and had to send it in twice in the first year for service. When it came back the second time, I sold it. But...
Great love for Chronoswiss!
And what a beautiful regulateur this one! Even more beautiful—for it's outward simplicity and inward complication—than a "grail" of mine, the Kairos Chronograph reviewed so poetically in 2015 by "The Watch Curmudgeon" of Worn & Wound. (And from whom I...