If your machine is properly working, you have all the time you need before the experience starts and you should put down the pipe.
Changing the habitude may play a role, I never went to try vaporizers since the machine works already really well. But maybe the heating temperature is too high? Somebody with experience with this model could maybe help...?
Or after all, the "tryp" in itself seemed for me to change also with more experience, for the best or the worst. Bodyload and amnesia may be the results.
In my opinion, if you get good results with the machine, keep on going!
Arthur Dee was one of the greatest alchemists of all time, not likely to his dad, I forgot his name, this small James Bond sorcerer working for the queen of a... Hail Arthur!