I replaced the background, the icons, changed the submenu's filters to the mod's item groups, renamed the 3dprinter it was based off of, changed descriptions, made some recipe files that worked with the "nocategory" menu to conjure the new items, but yet the items won't load in the custom menu, and the custom menu is morbidly laggy. For the record, my programming knowledge is akin to form-filling/tweaking/FOREHEAD+KEYBOARD until something works.
