I recently ordered a vamo from exhalevapors. When I got it and screwed on a tank, the tank screwed on crookedly(if that makes sense lol). It would be crooked one way then the other then when it was all the way on it would be straight. Now my protank won't screw on. It does screw on other apvs though. Is the protank stripped? Is this the way the vamo is or is mine faulty? Would like to know what's going on so I can decide if I should send it back or if that's the way the vamo is. Thanks all.