^I always find weighing myself out 'a bit more MXE' while under the influence is a farce hahah. The other night, I dipped into my old white powdery stuff I had left over, and after doing 45mg, I went back and weighed out 10mg more for myself.... it was probably a lot closer to 20mg, I was swaying to and fro hahah. Then like 30 minutes later my roommate showed up and I was like "Hey man, want some MXE?" and so I had to weigh him out like, 30mg and my scale turned off because I was so slow... so I ended up eye-balling it a bit, but it certainly didn't exceed 40mg...
Point of my story is, if you think you'll want boosters, weigh them out before the drug hits hahahah. I wasn't too concerned about inaccuracies because I know I didn't exceed 60mg for myself or 40mg for my roommate, but it was certainly difficult to do it.