It isn't clear which database you are using as a base, but I suggest you have a look at the ax classic database (if you haven't already).
http://www.nahunta.org/~eqemu/
Even better, contribute the changes you make back into the project. Project1999 has the most accurate classic database, but it is not available for public use. You can, however, review their dev/change logs to get a general idea on things you would need to be working on.
Classic data gets harder to come by with each passing day, and requires some reliance on the fallible human memory. I wish you the best of luck.