I just put an SOS out on Deorr's thread (same age, missing since July, has 12,000 posts!) to ask them all to come over and have a look at this case.
The positive thing about this one is that the family is out there trying and trying to find them. They're posting on FB pages, they've posted a text message from LE confirming lake boy DNA is not King. This case should be a sleuthers dream with the family desperate for help and offering info. I feel so frustrated that Deorr's thread has hundreds of pages of conjecture, despite the fact the family is saying zip. It's so, so weird, I am just not understanding the disparity AT ALL!
Hopefully some of the members on that thread will swing by, take all of 2 minutes to catch up, and crack on with finding Diamond & King!