[Elecraft] Installing Sub Receiver

[K5HM]

I am down to the part where I put the Sub receiver enclosure into the K3 and
mate with the pins connecting the Subin and Subout boards to the enclosure.
But - Once I set it in the rig, I can't see if the pins on these connectors
are properly aligned.  There is not a good viewing angle  It looks ok but I
could be off to one side by a pin or two or miss the connector altogether.
The long screws that pass all the way through the enclosure,  mate up with
the standoff on the main receiver board. 

Any way to know if I did it right before I complete the installation and
plug it in?   

73,
Ron, K5HM
k5hm.ron at gmail.com
www.qrz.com/db/k5hm

        Excelsior!