IMHO, Cessna should do what Cirrus did and bring in some folks who
have experience in JIT ,TPS(Toyota Production System) and other
inovative automotive manufacturing systems.

Cirrus obtained hired several ex-NUMMI(New United Motor Manufacturing)
people who have helped streamline the manufacturing and part supplier
chain. I remembering seeing early production floor pictures from
Cirrus and it resembled a local EAA chapter meeting more that a
production floor. It you see photos of the floor mow it's obvious that
there specific workstations and a real flow to the process.