Case a8800MR sugarcane harvester

This is a fixed version of the a8800MR case sugarcane harvester.

i have fixed the harvest at 10 km/h (6,2 mile/h (the ingame is glithst and is going 5 km/h (3,1 mile/h)) and i have made it unload faster so you don't losse sugercane becours you harvest to fast.