you mix up the old and the new library.
In the new library structure you no longer need the MNU files.
All necessary information is listed in the catalog files.
I recommend to study the OLH first.
You find information on how to customize the library
You also find in the appendix information for ALL files of IFX
After reading this you should be able to restructure your library.
You can also have a look to the tutorial pages
Nevertheless I had a look to your library.
Everything seems to be correct for the Infinera-mm Catalog
Be aware that the MM Pem nuts are only available for M3, M4 and M5 thread size!
For the Infinera-inch catalog you should add your INCH Pem nuts, not the MM
In the #nuts section replace the mm pem nuts by the inch pem nuts - that's all.
Thank you very much for reviewing the library! I appreciate the feedback.
I will review the links and hopefully get my mess cleaned up.