Installed F-750 aft baggage compartment side covers. Match drilled F-722 and F-724 baggage compartment bulkheads and F-750 covers. Drilled the rest of the firewall rivet holes and then started disassembly. I think there are two different approaches to part preparation. Either dissassemble everything and then start prep with the first parts to be assembled or prep each part as you disassemble. I have started by preping as I disassemble. Some parts require a little additional work as it is dissassembled. Figuring which holes get dimpled or countersunk or additional holes drilled is easier if you do one at a time and spend time checking he plans. There are many things not mentioned in the instructions but are shown on the plans.