Hi Joe,
Great mod by the way!

I've spent the last few hours tracking down a bug in the 'right click' context menu and it looks like your mod is the cause.
There is a vanilla game function called "Consolidate Thread" when you have 3 or more spools of thread that aren't full.
This option is missing when your mod is installed.
I suspect it has something to do with the way your mod implements your context menu options which is overwriting the base game somehow.

Thought you'd want to know.
Keep up the good work! :)