Yup thats the noise, sounds like someone inside the engine with a hammer trying to get out. The gears of the starter gear never wears out, it is the bearing surface that the starter clutch runs on that goes bad. The stock system with the 3 rollers is not the best. There is a member here that can upgrade that to an 18 roller setup that will last forever. Something to store in the memory bank for the next time you have to service the starter clutch.