  The structure of the Cauchy horizon of a charged rotating black hole is
analyzed under the combined effect of an ingoing and outgoing flux of
gravitational waves. In particular, by means of an axisymmetric realization of
the Ori model, the growth of the mass parameter near the Cauchy horizon is
studied in the slow rotation approximation. It is shown that the mass-parameter
inflates, while the angular momentum per unit mass deflates, but initial
deviations from spherical symmetry survive.
