I just got a new HDS clicky w/ flush button. It seems like there is a problem with the button. When I use the button, ~5% of the time there is no effect. For example, sometimes I'll triple click but get results for a double click or I'll double click but get the single click results. I can hear and feel all the clicks. Is there a break in period for the switch? Or am I clicking too fast/slow? I have used other clicky lights(Novatac) and didn't have problems. Thanks.