You should be able to create multiple welds by "preparing" the surfaces with either split faces or chamfers for selection in the Weld Bead dialogue box.
Another option is to insert a fillet weld bead and then go into the weld bead part and cut away the necessary portions to leave the stitch. You will end up with a multibody weld bead, but it should work.
I was able to create the multi-body part as Shaggy18VW suggested ... looks fine for what I'm doing. Just trying to have an accurate representation of drawing from 1966 to develop maintenance tooling.
CorBlimeyLimey ... are you suggesting a call to my VAR to suggest an improvement?