Pete i think you need to recheck your info as the one i built and the one that Klocklind is building are MBWMBK 1680 engraved and if you see my comparison post they are pretty good with a few small mods
The tolerances from an asain movement will be +-20 sec a day. yes you can get better regulation if you spend time doing it. At least this sounds better than the last one
Stiff your posts on his ans other forums are full of god information I just wish you would type in English rather than a German sasha baron Cohen character it often put me off reading them even though they are usefull.
With an amplitude that low I know some thing is not right. Sorry to all the people who do not think it is an issue but it is. Generally just giving a few more winds will not give it the correct amplitude. All the issues with the qc photos aside the watch is not as it should be. Would you buy a car that only ran well at half it's max speed? Or one that did not looked scratched only when it was wet??
Would you buy a car you test drove if the dealer would not let you shift into reverse turn on the AC go over 30 ? But he assured you all was fine?
For one I would not