After several times starting the bikes like for a year or the two the starter gets blown away as the 350cc and 500cc share the same uc starter which comes with the bike 500cc having more power blows the starter after several uses and the starter starts giving problem it is recommended that the starter should be changed after any such circumstances occurring.
There is lot of vibrations as the bike gets older and older the sound of the engine changes drastically which I dont like personally .Hence I would recommend buying a classic 350cc rather than a 500cc version of it.