Adjustable freight as part of the DAFF Farm Gate price

Currently, AgriDigital has a nominal amount of $25/mt for the freight as part of the DAFF levy calculation although there are a number of growers who are wanting to amend this as the freight is significantly more. In addition brokers are including the freight on the Broker Note so would like to see a solution where there is an adjustment on each contract to include the freight as part of the growers levy calculation.