Outdated T-series 'Dual-Shift-Plus' 12-Speed 0.2

- Ported over the 18-speed transmission from my older mod Twinstick as the 18-speed 'RoadRanger'
- The 18-Speed uses a custom binding "Splitter Toggle" to operate the splitter and uses the regular range/4wd binding for the range box.

Note: the gearing is set up such that gear 1 is "L" on an actual 18-speed and gears 2-5 are 1-4 IRL. So shifting up to high-range should be done from 5L to 2H