Comparison of the wavelength of the fastest-growing mode in the standard vs generalized case, at t≃ 40 ms after merger. Top: Standard MRI case, all coloured points are unstable to the MRI. Bottom: Generalized case. We mask the points where the instability condition is not met. Where the generalized instability is active, we observe λ_eMRI to reach values close to but slightly smaller than the standard case. Most interestingly, λ_max is of the order of 100 m or smaller at small radii, r ≲ 12 km.