Wentward Transmission Pack 6.1

- Fixed NBS Script to only activate at 0kmh, and shift into drive under 10% brake, allowing for a crawl mode
- New Voith E300.1 Economizer module, which restricts kickdowns
- Converted Allison T-310 to Allison T-375R. Same gear ratios, but different name, as I am using data from the T-375R
- Allison converter is now more loose, like the Voith
- Fixed W3A reverse axle sound glitch
- Fixed D864.5 configuration not spawning with the right engine