A DC-4M aircraft experienced a series of bounce-and-go maneuvers at Miami, resulting in a landing at Sarasota. Subsequent maneuvers led to the aircraft being grounded with feathered props, ultimately landing on grass with a significant shutdown of engines. The incident was attributed to a failure in the landing gear retraction/extension assembly, potentially exacerbated by improper maintenance and inspection.A DC-4M aircraft experienced a series of bounce-and-go maneuvers at Miami, resulting in a landing at Sarasota. Subsequent maneuvers led to the aircraft being grounded with feathered props, ultimately landing on grass with a significant shutdown of engines. The incident was attributed to a failure in the landing gear retraction/extension assembly, potentially exacerbated by improper maintenance and inspection.