Squeak Sound When Hand Turning Magnum XL 1.20 4 Stroke

This video was taken right after engine died at full throttle. When engine died at full throttle a noticeable smoke got released. In this video engine is still very warm to hot. As engine cooled down, no more squeaky sounds and its only a clicking sound. I got concerned if engine dying at full throttle after being well warmed up is a sign of it overheating. I am confident I got timing gear set correctly. Maybe the valves could be too tight

[@jeremyburton9038]

It may be set too lean .

[@patrickradcliffe3837]

Rings are dry. Richen up you mixture to keep the top end lubed.