dosing problem? tolerance? or something else?

[candy_kid]

I'm not sure if this is the right forum to be asking this as it concerns methylone also-- if mods want to feel free to move

anyway, this is something swim has noticed in his last bunch of experiments with mdma and more recently methylone. All experiences are spread out at least a month and more often 6 so I wouldn't think this would be about swim's tolerance-- but I guess that's part of the question here.

Effects from mdma (for swim) the last bunch of times are either
a) doesn't feel like quite enough to "break though" instead effects make swim feel drowsy and slightly antisocial until mdma wears off where swim starts to feel excellent and happiness. or
b) clearly have taken a bit much, incredibly drowsy and there's massive tingling which is uncomfortable rather than nice and relaxing as swim had it in the past. This is very antisocial and swim tries to escape and get control during this. When it wears off swim feels great and good again

in both situations it feels like the real high is coming after the mdma wears off, but its not intense, just a mellow happiness... no comedown and no hangover either, which did happen in the past... a and b has been achieved with 3 different batches of pills so far each testing blue/black (none of the common adulterants at the very least) on eztest.

and on top of this, 125 mgs of methylone just tonight caused swim to feel uncomfortable and mildly antisocial for about 2.5 hours (a mini version of the e effects for the duration of methylone's effects) and when it wore off swim felt very very good + mildly stimulated (but not in the way methylone worked prior)... swim took methylone once before at this dose and had fantastic results at this dosage + a crash at the end (backwards?)

my question I guess would be is this a problem with dosing? tolerance? or some randomly altered brain chemistry? Obviously noone can say anything for sure based on this description, but I thought maybe someone might have some understanding as to why these almost reverse effects happen, or at the very lest experience(from someone else of course )/possible causes/possible fixes etc--or maybe it just is dosing and mild tolerance is an issue? like, does anyone ever feel antisocial and uncomfortable on too low a dose of mdma?

anyway, if people have thoughts on this thanks in advance, swim really did enjoy this type of substance before it started treating him more roughly and it doesn't exactly sound like the regular kind of tolerance..

Thanks