

YM
Welcome to our forum.
What you described is well known and already discussed about 10 years ago.
LUC movements were designed to be very precise and ALL watches with seconds hand are subjected to COSC testing.
The pinions (gears) have tooth profiles and meshing with tight tolerances so the hand has to 'settle' into a gap or the adjacent gap when the crown is pushed in. In theory, there are three possible outcomes:
1) no movement because the hand is aligned with a gap between teeth.
2) movement backwards on hitting a tooth to the gap behind.
3) movement forwards on hitting a tooth to the gap ahead.
The gears could have been made "sloppier" but I'm glad they did not choose that design route. Your watch was adjusted at the Manufacture to chronometry limits that are tighter than COSC standards.
Since, you have found mostly forward movement, your natural push action must be imperceptibly biased with a forward twist.
Solution:
Knowing your own watch and finger touch, try applying very slight back-pressure on the crown to keep the hand aligned on the marker as you push the crown in. Within a few tries, you will get it perfect: "Mischief Managed".
Regards,
MTF



The first batch made has gone to PuristS in USA and EU before Christmas.
The 2nd batch made will also be for PuristS and after that production for the boutiques.
CHF 28,000 in your home currency with local sales tax already included.
Only from official Chopard boutique or PuristSPro except PuristSPro has NO financial interest.
Where is your nearest Chopard boutique?
Regards,
MTF
James,
For Australian PuristS, the order can be through PuristSPro as we have been provided with the Chopard "order form".
Delivery will be through Chopard channels and they will sort out the logistics.
Hope that helps.
Regards,
MTF