Have an issue - SureFire XC2 Weapon Light

I had this light laser combo on my Sig P226 for about a week. I shot at the range with it once, for about 100 rounds max. The problem I’m having is that if it sits for more than about an hour, the paddles will not work. I have to push the side button in to activate the light, then turn it off. Once I do that, the paddles work again, until I let the unit sit again! I called Surefire and they were very nice. They sent me a ups label and I have since shipped it back to them. I’m now waiting. I’m sure this was a fluke since Surefire is a quality product.