Hi, I have a Hippo V2 that is doing something very strange. I used this Hippo for a couple of months, when suddenly I started getting an OP reading on my Provari. I have tried several different attys and the same thing happens. I took the Hippo ring off and voilà everything works fine. I took the Hippo apart and found that the center pin appears to be one solid piece of brass. So, why do I keep getting the open reading on my mod? Before you ask, I don't have a multi-meter to check the voltage from the output side of the Hippo. Has anyone came across this issue? Any suggestions?