Hole series problems : (was Hole wizard not so wizard)

Does anyone else use hole wizard with weldments in an assembly.
I find it does not work for me. Sometimes it cuts the part I want it to other time it does not. Is there any logic to it when used with weldments?

As an example my recent problem it that the system has cut the first part, missed the weldment body I want the second hole in and placed it in a plate below (in the same weldment part) where I don't want it. If I set the distance then no hole is produced in the weldment. (inside an assembly).

SolidworksWeldments