Lots of work checking off details on the punch list. Last check of all control systems continuity. Filmed gear retraction/extension check at the request of the DAR. Installed seat belts and shoulder harness. Installed side panels. Installed seats. Installed all radios and instruments in panel. Swung compass and made compass correction card. Placarded transponder "inop" due to no FAR 91.413 test. Filled each wing tank seperately, each holds 55 gallons. Calibrated wing fuel quantity indicator. Ready for inspection.