[Help][C#] Handling Editor - Looking for someone to update this script

Hello guys, i have been unsuccesfully trying to find something like this or an updated version for a very long time, anyone interested in getting this working again for me and i will kindly pay for the service ?

Non of the settings are been applied to my vehicles. This would be perfect for me if it were fully functional but no changes are made at all to our vehicle.

Thanks

Is this what you’re looking for?

Does it have the ability to store and load preset meta files?

It loads existing handling values, but it doesn’t store them, you have to export them and save to file manually.

Sadly not I need something that can store some pre-made handling files maybe in xml formal like the C# Editor and then be able to switch between them and properly change the values.