The so-called "false errors" of the clock I can understand though, but is fixed with a little adjustment.
My minute hand hits every minute really a hair's breadth. However, it makes no difference whether my model when the minute hand is between 0 and 6 clock or 6-12 clock. I've corrected the minute hand to the smallest possible step to the right. I am in such matters quite a stickler, but so far has me no clock so convinced of approximate perfection, like this one!
Ingenious part for more than reasonable price!