With the aft ribs, I decided to complete one rib at a time, i.e. form the flutes and lightening holes, updrill, debur clean and prepare for priming all before moving on to the next one, makes the work a bit more varying. I did the 01R/L ribs today, as with all of the innner 5 ribs they require gussets to strengthen, but the 01R rib also requires to be trimmed and a piece of angle made from the Z01-03 stock replace the flange.