Having some trouble. Bought a new setup and can't get much zap out of the line. It is a ploy-tape type fence. If I touch the ground terminal and the hot terminal coming out of the box, it is a pretty good zap, but if I touch just the hot, it ain't much. The instructions say to ground the "ground" side to a grounding rod and comnect the "hot" to the fencing. Problem is, the "hot" has minimal voltage. Could I connect a line from both the hot and the ground to the fencing or is there something I am missing?