I am trying to add vertical stiffeners (TR6x2x0.25) to my rectangular tank.  I added a new part within the assembly, which is the two weldments shown in the attached image.  As you can see, the weldments are centered off of my vertical sketch lines, which are on the face of the tank.  I would like the face of the weldment to be coincident with the face of the tank, is this possible?

The other options I see are to create a seperate weldment and add it in to the assembly as a seperate part, or offset the sketch from the tank so the faces match up.  Neither of these are ideal.

Thanks for any input