The bottom bearing was picked by rotor height, so a new motor with a 19 mm rotor would silently take the wrong branch, and it is now an explicit per-motor setting.
From the Grok pain-radar digests, Nov 1-2 2026 (Nov 1 8:41 AM ET through Nov 2 7:41 AM ET digests plus the Haitch editions). Verified live 2026-11-02: issue/PR read; title and state confirmed.