Thanks gentleman. My initial look into it made me think it would work. I appreciate the real experience and feedback.
It will be a simple Atlas O-90 independent loop.
Thanks for the heads up on the terminal sections. I will wire separate independent power points for each 2R and 3R mode. Or perhaps an "interchangeable" power section I can remove and switch out depending on mode.
Matt, do you happen to have a picture of how you're powering your test track to change between the two? I would be interested to see it if you think it would be helpful.....