Warrcraft, well you got pretty much the same reply as i have except they clearly told me that there is no point to send it back because they can't fix it. Maybe because i've already told them my watchmaker said it was a construction and material problem on the stem and (i don't know the name in english)on the part of the movement that ''locks''the differents spot (set time, date) meaning that the stem doesn't correctly fit. i just come back for my watchmaker shop about an other rep, and we talked again about it as i left the YM to him for now. from his point of view the sweet spot problem doesn't come from the stem on itself, (the poor material of it been an other problem) but from the replication of the movement, he cracked open the Sub movment and showed me 2 parts with not finished edges and too thick to fit perfectly into the other parts. He ll make pics tomorrow for me to post and try to explain LoL!! And he ll try to fix it. But there is no guarranties at all that it ll work. Also on of theses parts is used for the date change or datewheel he thinks the problem comes from here. The maker should really fix it because i don't see everyone who has this movement spending that much money and time trying to fix a problem that shouldn't be here in the first place. Anyway even if he makes it, still the stem fragility will be a problem and i don't see how we can make them high quality...