Originally Posted by
vikingivesterled
The confusion about up or down movement of the door-plug could be in where the roller and where the guide is mounted. The roller is on the door frame and the guide on the door-plug and since the guide is open at the bottom the door-plug must move up to clear the frame mounted roller. Hence in closed position there is a small gap (with a gasket) at the top between the door frame and door-plug to allow this upwards movement. So the lift-assist springs would apply a force that would open the door-plug and not one that would keep it in place. This also have the ressult that all 4 (missing) bolts (including the ones on the spring guides) stops the door-plug from moving upwards.
Good summary of the last 2000-odd posts.