Well, I tried some pics again today before I continued to assemble the engine, and these came out a little better.

You can see how thin that area is next to the screw on the original manifold on top. You can also see the areas I filled with JB Weld on the bottom manifold. It has been enlarged to accomodate the carb throat, and you can see how the enlarging process gets into the JB Weld in a few places, which of course is what it´s there for...

The middle pic is one of those that didn´t really turn out yesterday, but I included it because it shows the ground down screw head, and the piece of plastic I had used to cover the screw head and form part of the dam.

AV8TOR