Fibre Admissibility and Resolution of the Capacity Exponent Discrepancy

The O-series has established that the Weil-block capacity exponent ₄ₗ₀₂ₓ 3. 72 0. 06 falls systematically below the phenomenological target range 7. 4, 10. 6, and that this discrepancy is structural: no reweighting of block data can raise the exponent (O15, Corollary~4. 8). The present paper resolves the discrepancy by identifying a misidentification of the physically relevant observable. The non-injectivity of the projection~, established from the Born--Infeld constraint, implies that admissibility is a property of complete fibres of~, not of individual preimage configurations. In the Weil realisation of Heis₃ (Z/qZ), these fibres are organised as conjugate pairs \c, q-c\ under the exact identity ₐ-₂ = c. The pair-level observable ₏₀₈ₑ (n) = c (n) \, ₐ-₂ (n) follows a clean power law with exponent ₏₀₈ₑ = 2\, c 7. 44 0. 12, confirmed numerically with R² > 0. 9999 and a factor-of-six reduction in slope variance. This result does not modify the underlying model; it identifies the correct unit of observation.