I've had a Viper from Vaprlife for about 6 months or so and it's been fantastic...until recently. Now in order for it to work, I have to unscrew the carto/atty little by little until the light comes on and then at a certain point (when the atty is loose) it starts vaping. If the carto/atty is screwed in all the way, nothing happens when the button is pushed, the light won't even come on. At first I thought it was the atty I was using, but now I've tried multiple attys/cartos and it does the same thing. With some cartos, I can screw them all the way down and the light will come on when I push the button, but it won't vape...
Any ideas??