It looks like they really need another person on their core team - not just a regular employee. Somebody who's willing to be in the garage with you ( why do you even have an office at this point, by the way? ).
You don't recruit that person by posting on the Internet, you use your social network ( and I don't mean Facebook ) to do that. Do they not have any acquaintances, former coworkers?
This may well not be the case - and in fact, I'd imagine it isn't - but the situation screams "these people don't have a technical clue themselves and don't have anyone in their social network who believes strongly enough in them to take the risk and go into a garage with them".