I have some QV I have been using and it seems to be working, I am only one or two weeks into my prop/EQ cycle but i noticed when i turn the silver round part on the top of the bottle it will turn. It isn't loose but if i apply pressure it will turn around the bottle. I actually have never tested this on any bottles during my previous cycles. And for some reason after 10 years I decided to twist it and it turned. As far as I know it isn't supposed to turn at all. I had to squeeze it pretty good and turn kind of hard but it turned after that. Anyone else have this with QV gear? Mexican **** is scary. They had the QV logo colored cap on top.