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Easy e
If you want a real reliable vape pen buy an "ego" . They have attachments for oil/wax/hash, and they have a dry herb attachment. They also have the attachments for the e-juice, called a protank. I have tried many vapes/pens/e-cigs and these are by far the best. They have variable voltage batteries and everything. With those you can dial in your hit to be as thick as you want. The batteries last a long time, and charge in just a couple hours. Google them, you won't be disappointed.
What model have you got ?
My mrs has got an ego-ce4 pen but that's just a basic e-cig