Reconstructed radial velocity perturbations U′_R(R, Z) of the most unstable eigenmode in regimes with Λ_Z = 1.6, Ek = 10⁻⁵, Pm = 1, Pr = 0.1, at R = R_in and stratification amplitudes (N/Ω)²_{R = R∈in} of 1, 1.3, 1.5, 2, and 2.5. The maximal shear is |Ro_max| = 0.05. The corresponding growth rate computed is given below the stratification value considered. The red overlayed curves correspond to the analytical formula (Eq. (11)). The vertical black dashed lines give the radius where the mode amplitude peaks and the vertical red dashed lines give the radius where the analytical formula reaches its maximum.