Hy there mate, i am using your mod and i create 9x Round Bale 67500 liters the i put it in a silage pit and cut it open; silage said there 67492liters, no big deal then i tested and see maybe the machine losses product and made a new bale 9x size cut it open and gathered it with the machine and got 16550 liters. in fact on every ball if you cut it you loose material.
I tried it with standard variant and 180cm bale 11000liters and cut it and got back 10815 liters. So something is definitely wrong somewhere in the coding.
The machine does not have power to move with 9x bale size up the hill a little i think an engine increase would fix this something like 500Hp would help.
Also very annoying is that when i get out of the machine the engine never stops.