I too had a large order seized and it all tested positive - so while I cant tell if his products are under dosed they are - In my case at least very, very, real - Since I have a few good friends in the right places I was LICKY enough not to have legal troubles from this - but if anyone wants proof I can give them my DHL docket number as well as the us customs subpoenas. As far as some product not working, I can't take an aspirin twice and get the same effect, and different formulations work differently on people - maybe the Mexicans are better for some - this is why there is no single brand of anything out there. All you guys talk as if your sources were your girlfriends, or more like those computer geeks who cant stand that someone else has an Apple or PC. Let’s try to work together here, and as adults try to evaluate sources objectively and help each other out.