... the turnout template 25mm to the right so that I could create an S-transition in place of the reverse curve. I then made a branch track from the turnout, and used the make simple link function to link it to the loop. Split the loop so that the constant 2nd radius is a separate template, inserted a LH turnout in it, and then make single-sided 3-way tandem. No idea if this is anything like what you are looking for, but it might suggest a way forward. 2_061743_110000000.png p.s. It doesn't look like a single-sided tandem, but it is. The loop line is the main road, both turnouts are LH into sidings. Box file attached below. cheers, Martin. Attachment: attach_3124_3732_scott_tandem_loop .box 53 posted: 7 Aug 2020 09:47 from: ScottW Martin, Thank you kindly for your help. When you explain what you did it all seems very straight forward but I would never had thought of doing it that way, I certainly wasn't aware of the 'Make Simple Link' ...