Hello all.  I have this assembly.  As you can see there is a external thread on the bottom element.  The internal thread is in the top element.  I created both of these parts with the same views in mind starting the helix from the same plane, same side, same angle.  How do I know they are aligned correctly so that the circle in the bottom part is inline with the hole on the top part?  Is my technique that I mentioned enough to ensure this?  I am about to 3D print a part and just didn't want to waste to much time trying to figure it out.  I read the other forum post on something similar it was kind of strange for me to follow.  Any help is greatly appreciated.  Thanks in advance.