Unfortunately, my new Pilot Big Date is headed back to Zenith for the second time in the six weeks I've had it. Same problem as the first time: the chronograph second hand doesn't reset to 0. The problem probably would have recurred more quickly but I rarely use the chronograph. I tested it the day I got it back from service and then didn't use it again for three weeks, until yesterday.
I really like this watch a lot. I hope that soon I'm able to keep it for longer than a month without sending it to Le Locle.