Okay, Bean Counter Managers, this isn’t nuclear physics here. Either hire more people to work the floor or stop pushing the ones already there so hard and accept a lower production rate.
There is absolutely NOTHING NEW in the processes for building Boeing aircraft, especially the fuel tanks. As the tank areas are built, ensure that the areas are cleaned after each step. Then, prior to closing ensure that an final cleaning is accomplished then 100% visually inspected. Heck Boeing People, you have been building large fleets of big airplanes since the B-17 and, as far as I know, there hasn’t been a in-Tank FOD issue until recently. While the technology is new, the -737Max and the KC-46 (-767) are NOT NEW and EXOTIC designs with special / new / complicated processes for making fuel tanks.
Or, of course, you can continue your failed “Bean Counter” ways until the production finally halts for lack of orders and your all important stock value falls to zero…