I've purchased and returned 2 watches now and I'm on my 3rd Forerunner 45 and the alarm function won't vibrate - just the tone works. I use the alarm (on vibrate daily) and it was perfect with my Forerunner 35. The watch CAN vibrtate (timer, notifications, etc.) but just DOESN'T with the alarm function. It's fully updated and synched but no luck. Anyone else? Any ideas on how to make this work?