You outsource to save money. So it makes sense to maximize those savings wherever you can.
example, don't pay CAD rates for typing. Typing is something you can
likely do in house much cheaper, so it makes sense to provide your CAD
guy with information already in typed format. Notes for drawings can be
in a word processing file and lists like Bills of Materials can be
conveyed as spreadsheet files.
what you need is another good way to save. Make sure your CAD guy is
producing what you want without a lot of extras you don't need.