Are there any issues regarding asymmetric drag inflight when you only have one off?
Flew OJI recently, Scon, and there is a 2.9% (I think) additional fuel allowance built into the fuel flight plan - although the aircraft didn't seem to burn much of this additional fuel.
Also, from a PF point of view, there seemed to be no appreciable roll during either takeoff or landing, and trim for straight and level flight was within the usual range.