  We consider the process of associated stop-chargino production in the MSSM at
LHC and show that, at the simplest Born level, the production rate is
dramatically sensitive to the choice of the benchmark points, oscillating from
potentially "visible" maxima of the picobarn size to much smaller, hardly
"visible", values. Adopting a canonical choice of SM type CKM matrices, we also
show that in some "visible" cases the total rate exhibits a possibly relevant
dependence on tan(beta).
