Just tried some of Mrbiz's mdma for New Years Eve, and while it was pretty great, I feel it lacked a decent amount of the magic I got from Domesticmolly about a year ago. Lot more jaw clenching, dry mouth, and somehow I cut the tail end of the ride off (ie went to bed) because I was getting bored and a bit tired. Similar doses of 140mg each too.
I doubt it was Mrbiz's product, as I've heard such great things, but what could've caused this? I was a bit tired before starting, and this has only been the 4th time I used mdma, with about a year since the last time.
Chemistry plays a big role in mdma. Anything that could have depleted serotonin would give a result like this. You definitely waited long enough