What constitutes a leech is not a fixed definition. I haven’t used the scripts you’re using, so I’ll suggest trying the Item Inspector as it gives you flexibility and tons of functionality for working on your leeches.
In the settings you can define how “lenient” the script is going to be for defining which items are to be included. Check @prouleau’s OP post for instructions for how to set leech values and how to make the most of the script! 
Good luck! 