I imported 2 stl files
ran the Dual Extrusion Wizard, this resulted in a grouped model
I then selected the group and rotated it -90 on the Y axis.
Then I pressed CTRL-T (drop to table)
It did NOT drop the group to the table but dropped each individual stl file to the table, resulting in them being misaligned
note that one of the STL files does not actually touch the table when in that direction.