I recently purchased a new Senator Meisen from an AD, mid July. I wind in the morning before wearing and will wear for 10-12 hours and it always stops 2-3 hours after removing. If I understand correctly it is supposed to have power reserve of 55 hrs. Is it possible it will losen up after a while, I did not have this issue with my senator perpetual and I hate to think I will have to send to manufacture for sevice. Anyone else experience an issue like this?