I want to say if you smoke 30-40mg in one hit from a GVG(preferrably with a mesh screen) and still are struggling to "gain something from the experience", you should try another method.

And BTW, I don't wonder that you don't get much out of the experience if you have not broken through. It's kind of equal to saying "I can't get drunk from one beer". So dose yourself a higher dose and see how it goes, and no it won't kill you. If you feel just that your were more shocked, just try a MAOI combination, such as aya.