I know what you mean about the level 1 experience. Usually seems to be lots of good CEVs and if one opens one's eyes things look very altered but one can still get up if one needs too.
It is on those 2-3rd hits that the intensity and power/depth of those visuals increase and the background becomes less of a background and more of a space that you are in or at least it becomes far more 3 dimensional.
I also know what you mean about unfinished pipes!
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My last journey was w/ the bottom of my pipe. I had scraped the ash off the top of my hand carved wooden bowl a good friend had made for me. The bowl is a little deep but works great w/ mullein and spice melted and sandwiched in. As I scraped away the ash I found a good bit of gooey, unburnt herb left in there and knew there was still a good hit left and when I got around to hitting it, it blazed up nicely and didn't taste bad at all but the rush came right away and after the 2nd puff was good. Not breakthrough level but far more than I normally would get for the toke taken haha.
From my limited experience w/ the spice I have noticed anywhere from 4-6 varying levels and haven't completely broken through yet either.
As much as I love LSD and other psychedelics, nothing compares or can prepare one for DMT. It is truly out of this world and I am grateful that I have managed to get to experience it.
Thanks for sharing trancenut.