Case IH Harvesters Pack v 1.3 Fix

The Pack consists of:
– Case IH 9230 Single Harvester with Dynamic Front Wheels
– Case IH 9230 Dual Harvester with Dynamic Front Wheels
– Case IH 9230 Crawler Harvester
– Case IH 7130 Harvester

Version 1.3:
– Small fix to the unloading time, no longer takes ages