Hi guys, have kept this Tag Heuer chronograph with a month, it is a Autavia with Caliber 02. I occasionally found the start/stop button of the chronograph can not click, the start function always work, for the stop function, I can press it but it does click and stop, when that happens usually I need to try two or three times to click, but sometime I have to press the reset button first then be able to click stop. And It happens around one out of 30 times. It's the first time I own a chronograph watch, is it a kind of general thing to all chronograph watch? And since it happens not a lot, not quite sure whether I should bring it to service right away as it will be hard to represent at the service centre. Any idea? Thanks in advanced.