I recommend you rethink the single common, especially if you run DCS. I'd run separate common for each track loop and the accessories.
John - The single common was based off of the recommendation of Mike Reagan in an instructional video he did back when he worked for Lionel. That being said, you've never steered me wrong so if you are recommending a common for each, I'd be a fool to not heed your advice! Consider it done. Thanks for the help!