The problem I am having is that when I have the rubber seal cylinder on, twist cap back on, it draws but I only get a tiny vapor, I would have very strong raw flavor. So i took the rubber cylinder off, twist cap back on, whoa huge vapor, flavor is perfect ratio.
Try cutting some V in your rubber seal cylinder to correspond with the wick so it doesn't pinch the wick when pushed on all the way to see if that helps. Cuticle scissors work well for this minor task.
Errol