Hope someone can help me. I am thinking about having 2 "independent loops" connected to each other with a pair of remote O31 switches. I'd like to get a loco from the yard to run on the inside loop and another loco to run on the outside loop. Each loop will be powered by one side of the z4000 transformer. Can this be done? Where would I need insulating pins (Using tubular type track). Pardon my lousy drawing.