Cleco the seat back brace and match drill, countersink the mid cabin decks, then cleco in place. install & cleco the F1013 R&L longerons. Here's where I discovered, that I messed up the F1013L longeronm it will have to be remade, too late to pick up a piec today, So Monday, down to Capitil metals for a piece of 6061 T6 and a re-make !@#$!@!!!!!!
Countersunk mid cabin decks.
R longeron in place as well as both mid cabin decks
