Some basegame auger wagons cannot be filled to their capacity, since
maximum allowed mass for road use was configured and not the one for
field work.
This mod adds an additional shop object with corrected
max mass for each affected auger wagon. Following vehicles are
corrected/improved:
Bergmann RRW 500: 52 tons
Demco 2200 Dual Auger Grain Cart: 72 tons
Elmers HaulMaster: 65 tons
HAWE KUW 2000: 28 tons
HAWE ULW 4000: 48 tons