I just received a GA #0008 Davis trigger from TOW this week.
You must have got the only one that came in.
I was just at Tracks shop today, kinda busy with half dozen folks in there. Waiting my turn I struck up conversation with a Gent that was buying a Vincent kit with Greg picking parts and they had no DS-4 I asked how about a 6? Nope.
The guy was another local so he'll wait for a DS-4 as he has plenty to do with the kit stock, but I wanted to check out the DS-1, Nope.(!)
The only Davis Double they have in stock is the Early, I asked Greg what's going on with Davis and he said they have no idea, and his "guess" was just as Mr. Roller mentioned that perhaps there's some glitch in the supply chain.
So that's the word from Track as of Black Friday, they have no clue,,