Please quote or tag me if you need my help, otherwise I won't get an alert. I only saw this one by chance.Deleting a mod deletes all worlds? When did that happen?
[doublepost=1471209403,1471209342][/doublepost]Oh Kazzy, how do I modify vanilla recipes?
To change an existing recipe, you have to use the RecipeEditor class. I've never used it, but from what I gather you need to use RecipeFinder to find the recipe you need and then pass that as the argument for RecipeEditor's constructor. Then you can do whatever you want with it.
The ExampleMod makes a new static class to do all this in, and then calls it in the Mod class' AddRecipe method. Check it out, it seems like you'll be wanting to do something similar.