I have now taken about 6 or so pre breakthrough doses and the last one not only felt phyciscal insofar as my head felt it was throbbing and i was getting mini brain zaps but more importantly as i was experiencing the vivid colours and patterns it appeared to me really obviously that i was just in a corridor and the realdeal was at the end of the corridor BUT that would mean more than the 10-20mgs im taking at the moment So I think im ready to ramp up the dose now - I am only eyeballing it but the way i see it a toke is a toke right?

From the 3 experiences I had (all sub breakthrough), I wouldn't say that a toke is a toke. The same volume of vapor can contain very different amounts of dmt, obviously depending on the amount of dmt used. With the eyballing method, it's easy to get 30 or 40 instead of 10 or 20mg.

My first try was a dosage of 30g (max 35mg) and was very mild. On my third I had 20mg (max 25mg) and that was way stronger. Technique is as important as dosage.