The 757 gussets that connect the 705 bulkhead to the longeron were prepared for a slider per the plans and drilled to the longerons at the specified locations. For the slider, the aft rivets on the 757 are flush #4 rivets.
The rivets in the side rails were very tricky to buck. The squeezer would not fit and my old trusty tungsten bar would not fit. So I had to resort to a previously used trick. I used the yoke from my squeezer and it fit well, while my hands were much more sore, the rivets set fine.
I also made some clips for the static line and countersunk the screw hole for the tank attach bracket to #10 and installed/torqued it.
Oh and I also installed and torqued the bolts that connect the lower longeron and firewall.