I apologize if I've misinterpreted anything you said. My main point is that I believe that hunting him down is going to make him feel pressured, no matter how polite you are, and therefore less likely to return. Do what you feel you must, but I recommend leaving him alone. I think the avali community has proven that it can tick along okay without him. At least that's how I see it: the machinima (my most successful project) needed no input from Ryuujin besides "yes, you can use the avali" and "you can deviate from canon if you need to." Maybe I'm not as disturbed by his absence as you are because I saw this coming from the very beginning. The reboot was too big, of course it was going to bog down.