I ran out to the shop for a few minutes tonight to finish up the top two rows of rivets on the seat backs using the c-frame. Now you can finally see how everything goes together with the seat back hinges mating up to the hinges attached to the floors. I haven't put the top seat back braces in place yet (these attach at the hinges near the top of the seat frame) because I'm not sure they'll be necessary. I know a lot of people just leave them out. It just depends where I end up locating the bottom of the seat back on the floor. In the aft most position, having the seat brace in place would essentially make the seat vertical, whereas leaving it out still allows the seat to be slightly reclined by resting directly on the seat bulkhead. If I end up using one of the more forward floor hinge positions, then the top brace may be needed to keep the seat from reclining quite so far. I'll just have to wait and see how it all feels once I have cushions in place and see how much leg room I need.
