- Always think like this: Eugene PGRS truck mod and then fix for that mod
- Then addons, like in this case Kast rigid base, truck brand addons, like Eugenes PGRS, then fix for that mod (PGRS)
- Fix for that addon truck brand
- Kast any truck brand mod (Eugene PGRS in this case)
- Kast rigid base
- Fix for Eugene PGRS
- Eugene PGRS truck mod
About "fix" mods: be aware that sometimes they could include other earlier fixes and therefore overwrites more recent fixes and that is why you sometime need to swap load order on those