Today wasn't as productive as I was hoping. I reinstalled the control column mounts only to find out I needed to take them off to allow access to dimple the bottom flange of the aft F-704 bulkhead. I then reinstalled the column mount and then clecoed the F-716 seat ribs to F-704. I then installed the rib bolts, washers, and nuts. I also dimpled the forward F-704 bulkhead flange.