Brief Description: Fuel tank attach angle brackets
I removed all angle brackets from both spars, used bolts with lots of washers to space the bolts so I could clamp the platenuts in the correct position on the 712 angle brackets. I then drilled through the angle brackets and the platenuts to create the rivet holes for the 426 3-4 retaining rivets. I then hand squeezed the rivets for the platenuts. All in all a good days work.
The outer 6 fuel tank attach angles for both tanks. After platenuts have been riveted.