I've been working on adding control info for missing entries/new roms as I've been going through the games running on MAME, using control panels pics, instruction manuals, flyers, or on-screen instructions, where available. So far I only have a few letters of the alphabet done, but I'll try to look through my revised control file when I get a chance. I didn't, however, keep a record showing from where I got the information I used, so unless I backtrack and look for the materials again, I'm not sure how much use it'd be for the official project.