The Bare Sag at the Match Extraction

All-Fields programme paper (All-Fields Run, Batch 18 (AF)), November 2026. Written November 2026; publicly deposited 9 November 2026. Instrument 13 graded the completed fillings' match curves' sags and left the bare form at that extraction ungraded: the acoustic fillings' own match curves — the one-anchor curves of the first instruments and the two-anchor curves Instrument 9 carried across temperature — read for their feet, minima and depths in Instrument 12's form. This paper executes that grading. The bare feet are Instrument 9's own first-row values, and the completed feet stand at the derived count factor above them, as Instrument 13 requires. The bare depths, however, do not inherit the feet's factor: the completed depths exceed their bare parents' by factors of 1.1970 to 1.2250, all below 2^(1/3), and the completions deepen the bare dip on every curve — there is no relieved curve at this extraction — while moving every minimum to a lower temperature. A cross-check inside the instrument reads the same four fillings' T³ sags by Instrument 12's own function and hunts the bare figures AF-40's paper carried (171.8 and 196.9 kelvin) over every curve the port owns. The hunt fails, at full size: the carried figures s