I remember ready sometime ago that there was a problem with the Mexican Sust Redi's. That there were alot of fakes. The fakes had the same writing but had grey rubber on the plungers instead of red. Can anyone shed some light on this. I'm trying to figure it out, I know someone who did a few of these and had NO results. He chose them over the Nile amps. I told him he was a dumbass. But thought he was getting a deal.