Residuals of the χ_red²-minimization as a function of the primary mass M₁ and secondary mass M₂ with the condition of equal metallicity within the uncertainty range of the spectroscopic value of the components Z_1, 2 = Z_spec ± σ_Zspec (Case C3), with the inclusion of Δν in the figure of merit. Colors and symbols are the same as in Fig. 3. We added the revised seismic masses obtained from the corrected Δν value as an orange cross.