I've searched for this info and found nothing - doesn't mean its not there, but I'm just not putting the right words together I guess. So, the question is this: my U1 seconds hand really stutters badly - I'm sure some are worse than others and I think mines on the poor end of the scale. Can I: open her up and put more brake pressure on the second hand to keep more constant gear contact? or can I upgrade the movement keeping all other things the same? DG4813 is thicker so alignment is prolly