Well ,Joe....close but.....not quite!
This JAVELIN is new enough to already have the Mid-Boom sheeting for the Main (pics below) It is identical to how my DS II is rigged.
The Boom-Vang is also there, I'll post a pic/drawing of how it is rigged too. I show a pic of my Boom-Vang attached to the mast, so as to clear up one confusing point, I have my lower block rigged upside down, the jamcleat should point down, not up. I have mine rigged like that because I do not use the integral jamcleat but instead use a camcleat mounted on the top of the cuddy, this is due to the fact that on the DS II I could not get the angle right to easily lock the line into the jamcleat, the original setup worked great on my old WIDGEON and when I rigged the boom-vang on our old CAL 21 I set it up using the built-in jamcleat and it worked fine. (Someday I may figure a way to cut of the jamcleat on my boom-vang block)