Just wondering would anyone have a fan speed setting for mixing osr and dap in the same pipe. The osr and slug pellet mix will be about 5.5kg/ha in the 1st hopper and the DAP will be going on at about 90-100kg/ha in the second side of the hopper ( Partner FT2200) Book is fairly vague..... was using it at 4300rpm for spring crops with barley @180kg and DAP at 185kg/ha. Also does the rape distributes evenly when mix with DAP. Thanks