As I said before, it's long past time to stop trying to do the internet justice thing and get the real justice involved. Couple pages back someone posted a link to lawyer referral in the offending party's area and that's where you should continue this discussion.
If you're uncomfortable with dealing with an out of state entity, I'd suggest engaging with a lawyer in your state who can better communicate with an attorney licensed to practice in Missouri. Yes, it will cost you money up front and your pistol is going to cost you more than you bargained for, but there's a caveat.
Lawyers aren't stupid, they know how these games are played and how it affects both their clients and their bottom line, so what they tend to do is to ask for damages that precalculate their expenses and fees as well as damages due you. It's part of their game, no choice but to accept it.
What that means is, should you opt for this method, the defendant will be served with a notice informing him of the pending action and expected damages until or unless he makes good on his end of the deal. Nine times out of ten, people in that position choose to settle out of court to avoid getting really screwed as they can be.
What you're doing right now, here and over at Cast Boolits, is potentially damaging your case and giving him ammunition for his defense. Forget 'internet shaming him', it'll only bite you in the behind when the dust settles.
Mods, for the OP's own good, I'd shut down this thread before it ends up playing into the opposing side's hand, because in cases like this, any and all communications related to the case can and will be brought to bear on both sides. Each declamatory statement posted, by both plaintiff and others, may be used against him and could quite possibly be used in a defamation counter suit, which would drag the whole process out even longer, given the interstate nature of the case.
This is just my two cents worth, but I hope OP chooses the right course of action. Good luck to you, sir