Cruise is smoother, way smoother. All power ranges are smoother. I will take low frequency “hop” for a few mins to have it smooth through all ranges. Impact to engine is a lot less having it smoother every where else. When I was letting it warm up it was not really a vibration but about every second a hop felt through my squishy tires. When you hold the balance ring and you turn it you can here the mercury running around so I doubt it stays in any location on shutdown. Honestly it does not concern me one bit that it’s not as smooth at idle as before because it’s noticeably smoother through all ranges.