There's a beautiful fillet under there.  Because of all the lug and bb port manipulation to build this 44cm frame, I silver brazed it with 45%.  It fills any gaps better than the 56%.  I'm also trying out a flux and it seems to work OK.  I got one seat stay on this A.M. and checked the dropout alignment. The large blob of silver at the dropout joint is cosmetic only.  I'm going to shape and blend the joint for aesthetics.