I dropped the Weapon field from the item search and replaced with "Skill". It should function similarly and include the newest items. The weapon field was something we manually put together and was more difficult to keep updated. The skill is present in the DAT files so it should update when new items are added.
I also expanded the max search results from 100 to 200.
Example Query: Scythes level 80+
http://www.ffxiah.com/search/item?&level[0]=80&skill_id=7#adv