Background: For about a month, I was rolling almost every weekend dropping one pill, rolling pretty hard than dropping another later in the night, prolonging the effects. Each time was of similar intensity. About a month passed without any pills, then I had a chance to take some more. I went with one and half rolls, but felt like I only took half of one. basically, i was just anxious waiting for the roll to kick in, although it did put me in a generally good mood. Fortunately, a friend showed up with more, and I took two more at about t+3.5hrs. Those had me rolling real well. All the pills were from the same source with (supposedly) the same amount of MDMA. (100mg pure powder in gelcap) I just wanted to see if anybody else has experienced an unexpected increase in tolerance, or if I should blame the quality of the pill.