I did most of my CPL and all initial MEIFR training in a Seneca 1, and anyone who has flown this type of aircraft will know about the handling characteristics seemingly peculiar to that particular aircraft
With two pilots and no payload the C of G was well forward meaning for landing it was significantly nose heavy. And I mean real heavy. With no payload the fix was to have sufficient ballast down the back to move the C of G back. If my memory serves me correctly the handling characteristics were normal