First many Mod Items doesnt work with that plugin? It always says: I cant repair that.
Do u have a version for 1.7.10 Cauldron ? Cause the current one doesnt work. I use the 1.7.2 right now
without any problems.

I hope u can help me.

Is a problem with mods' items and your Cauldron version linked or are these different problems?
Do you have any errors in console with 1.7.10 version?

Okay, no answer provided so I'll close this one. Anyway, we're working on 1.12 support right now.