[Kevin]

If you're making life suck for the recognized chapters with too many rules (e.g., dry campus), you're just going to push kids to take a really hard look at the unrecognized chapters.

Probably your best bet would be to enter into discussions with their HQs to bring them back into the fold (and make them subject to the rules). Absent that, you're going to have to give the recognized chapters a competitive edge, give kids a reason to join those instead of the unrecognized chapters.