[Gryphin]

Nice work WarDad
Seekers:
As far as I know the way a Multiplex or stacked units work:
All of the same weapon will fire at the same target untill destroyed.
Since the algorythm is:
Fire First CSM at First target
Is Target Destroyed? No (since the CSM has not reached it yet)
Fire 2nd CSM at First Target
Is Target destroyed? Nor (since the CSM has not reached it yet)
Repeat. It will fire all of the CSMs at the same target because it has not destroyed it yet.

Multiplex works with direct fire since a direct fire weapon might destroy the target befor the next one fires.
This implys that you should not expect Mutiplex results from Seekers.