Middle Office Equities/Fixed Income

Good Morning hustlers,

I have an interview this week with both the Fixed Income and Equties Desks at Citigroup for an analyst position. Besides the basic interview prep, I'm kind of curious as to what I can do specifically to zone in on preparation for this. I have the technical interview guide down, my excel skills are solid, and I follow the markets and current topics religously as anyone else on the boards.... but having said that can anyone shed any light on some other ways I can prepare for this? brain teasers? Quick Math in my head? Trade Products? I'm fairly basic in terms of bond market knowledge so I was wondering if there's any way I can bump up my fixed income game for this.... I'm assuming this is trade support and don't need to know much in depth modeling and things like that. Anyways.. any help or insight would be greatly appreciated.