From faithfully reading the MB, I know many of you do not repair worn Hermle movements, but simply replace. For eight years that has not been my general repair philosophy. I have normally attempted to salvage an original movement. However, I can almost count on a floating balance to turn in to a "come-back". After re-bushing nearly the entire time train and re-pivoting # 2 and #3 wheels, the 350-020 is back for the third time! I received owner permission to just replace the movement. Contrasted to pendulum movements, it seems balance style movements can not afford to lose any power through the train or else stoppage occurs. After doing a major rebuild on the last visit and testing for three weeks!!... it again stops regularly and has difficulty producing 180 degrees rotation. The balance lacks any "snap". Well, they say three times is the charm... my repair philosophy has changed...I now replace floating balance movements. It isn't worth the trouble to rebuild them!