RAIN WON'T STOP ME

This mod aims to solve a mistake from the base game.
Some potato and sugar beet harvesters are able to work in hail and rain, but not them all.
With this mod, all of them will be able to do it.

Affected machineries:
- Grimme SE260
- Ropa Keiler 2
- Ropa Panther 2
- Ropa Tiger 6