Crank sound when starting

220k miles; On igition the vehicle will make a cranking sound and not turn on. And, after a few attempts it will turn on. Then the bolt to the gear reduction starter broke. Once this was fixed and replaced the car would continue with the cranking sound. I took it to 2 mechanics which said it was a damaged flywheel. This was replaced with a new gear reduction starter. The vehicle started excellent after about 4 times. Until it was parked for about an hour and restarted; it did not start without cranking loudly and after a few attempts. Have any ideas what the issue could be? It has new flywheel and starter.