I have a new Vostok less than a month old with 2415 automatic movement. It seemed to be going well and my faith in Vostoks was increasing from a very low point. The first problem I encountered was when I left it off for the night and put it back on in the morning while it was still ticking. It stopped but shouldn't have as I've noticed the auto winding is extremely efficient on this watch. I've noticed that even after a lazy day and then going to bed, it still has over 20 hours of reserve built up.
This happened again so I decided to shake the watch to build power reserve to see if it was just running low, which I knew wasn't right because usually a healthy Vostok movement starts ticking when you just even pick it up! So after the shaking it would tick for between 5-60s approximately and stop. I fiddled with the crown, moving the hands forward a lot which seemed to work.
So then I left it to check once more that the power reserve was ok and it was. After less than 2 min of shaking it had built up lot of power reserve.
After this I hand wound it fully, let it run down, hand wound it fully again and found it had stopped again about an hour after being fully wound. So I shook it, played with the crown a little to move the hands, bumped it a little to no avail. Giving it the palm smack was the only thing that worked this time. It's currently ticking away and I'll check again when the power reserve runs out whether it will have problems starting again.
What's the latest thinking about this problem because I've read about it many times. Is it badly lubricated? I mean it keeps great time (+17spd out the box and slowed to +3spd and winds very smoothly.
I have 5 watches now and planning on rotating them. I don't want to have to keep having to smack the Vostok every time I'm going to wear it.
I've contacted the seller but if I have to send it back at my expense it's not good because shipping costs half of what the watch cost.