Hey all. So I bought this power supply unit and just got it in today.
Plugged it in, adjusts to 18v no problem. But when I plug my zap into it, I can only get 13.2 volts from it at full dial. Unplug my zap, and the dial jumps to 18v. Plug the zap back in, 13.2v.
Does this make sense to...