Here is what works for me. On the input port it should be as far away from the electrical connection as possible. For duel connections Opposite side to where the connection is and single connection catercorner. Out put port(s) slotted along the top with some brakes for strength is the best choice. I hope that makes since. Here it is again. If there is one electrical connection and it is on the left top corner then the input port should be on the right lower corner of that plate. Duel electrically connected plates one on the top left corner and the other on the bottom right corner then the input port should be on the bottom left corner. This is using the least active real estate available. The difference is small but it all adds up.ok so here the question would be are you better connected at the top of the triangle or the bottom? is there a relationship between contact position position of gas output from the plates?