Tesco star pack lower the suction target pressure via the 255 but be careful because as your putting the bottle in and your pressure rises in the gas cooler it can cause the discharge PRV to blow off because the fans can be a bit slow on reacting to the pressure. On the advansor packs lower the HPR receiver pressure via parameter n71 on the 356 controller to around 32 bar 31 minimum and that would drag the bottle in no problem.
You can reduce the HPR pressure by the 255 aswell but i just do it via the 356 i find it quicker.