You can copy weights from a Riot skin or your own skin onto a new model.
If you encounter any issues with this tutorial or you don’t understand part of it, you can ask for help on the Killerskins-Discord server
or you can contact me directly: IM#6715
Sometimes you mess up and need to unbind your skin again and copying weights saves you from having to do them over.
You can also take original Riot weights to save some time.