ebijack
Babbling Farker
Kinda hard to describe but there will be a spring handle on the outside right-side door just off the center line and at the midpoint vertically that will operate a flat cam thingy on the inside so when you turn the handle 45* one attached 1/2" steel rod will go up into a receiver in the top of the door frame and a second attached 1/2" steel rod will go down into the bottom of the door frame. I can put a little bevel on the ends of the rods so when they engage they will draw the door in tight. The left-side door is captive to the right-side so it will be pulled tight too. I want it to be something that can be operated with one hand if necessary. The prototype worked like a champ.
I'll take a couple pics when I fab it up for real.
I understand what your talking about, should work good.