I 've tried the fixes, seem to work okay for a few holes, then back to jitters/etc. One thing I've noticed that if I take the club back and it does not go back smoothly, I'lll have a jittery meter.
But, this issue is what keeps me from paying for any upgrades, I can't see the point of spending money to lose balls/etc and not be able to score any better...
I've been keeping track of missed putts inside of 10 feet due to the "jitters" for about a week since I started playing BethPage....it cost me 3-4 strokes per 18 holes...frustrating yes....but I can live with some aggrevation as long as it doesn't cost me any money.