Was having difficult earlier in the week with the prop extension. There was always a small gap on the right side between extension and engine flywheel, facing the airplane. Called Sabre Mfg (that makes the extension) and they suggested polishing the prop bolt lugs and large center lug with fine emery paper. Did that, but still no joy. Finally figured out the flywheel was sitting cockeyed a bit on the engine flange. Turned out (thanks Lars!) it was simply pulled by the alternator belt. Loosening that, everything could seat properly. Made a couple of simple bolt gizmos to temporarily hold the rear spinner bulkhead to the extension, for cowl fitting.
Sabre Mgf extension, properly snug against flywheel
