What was found
ENGINE SEIZED IN-FLIGHT. SERVICE CENTER THAT REPAIRED ENGINE SAID COUNTERWEIGHT CAME OFF REAR OF CRANKSHAFT. SERVICE CENTER ALSO SAID THEY BELIEVE THAT COUNTEWEIGHT CAME OFF DUE TO THE WAY REVOLUTION INSTALLS BEARING ON END OF CLUTCH. IT IS HELD STATIONARY WHICH DOES NOT ALLOW END OF CRANKSHAFT TO WOBBLE WHEN IT IS NOT EXACTLY TURNING TRUE. SUBMITTER HAD TO DO AUTOROTATION, NO DAMAGE.