I hae sevral 21j watches adn i can immediately tell the difference between soemthing that is spinning at 28.8 adn a 21.6 bph. Is it possible to up the Beat rate on the older 216 movements so they have a smoother sweep? I notices a couple of my reps are the 6 beats per second but not as smooth as the eta clone 2836 that i have in my DSSD. But they are no where near my favorite watch which is my Fakey mariner with a Daytona bracelt. This i know is only 21.6 and it is very easy to tell it has only 4 beats per second. So if it is possible to oerclock the cheaper 2813 DG movement how long is life expectancy reduced because of this?