There is no 31 row option on the "With Fertilizer" model. Also, you need to edit the XML to add "sowingMachine" the fruit type categories to allow to sow grains and grass with the 31 row options.
ill add the seed types to the xml, but the 31row will not have a fertilizer option
Yeah I was hoping for a split with fertilizer too. We run a 2500 8/15 center pivot in real life.
I have been waiting and searching for a 6/13 or 8/15 as well. I don't always like playing 12 or 16 row on everything.