Complex sentence: The GO-300 engine also suffered reliability problems and helped the Cessna Skylark develop a poor reputation, although many Skylarks flying today have been converted to normal engines where the crankshaft drives the propeller directly.
Split into simpler sentences: The GO-300 engine also suffered reliability problems and helped the Cessna Skylark develop a poor reputation. Many Skylarks flying today have been converted to different engines where the crankshaft drives the propeller directly.