We would like to reduce the net minimum flow of our Visbreaker unit in order to increase our flexibility. Our concern is that this will lead to shorter runs due to coking in the furnace. Do you have experience regarding the various available options: recycling VSB gasoil or VSB residue? Co-processing LCO or slurry from FCC? Increase the injected BFW/steam to the VSB furnace passes? What would you advise?