@VJandP Regarding your SCARM track plan:
1) Uploading the actual SCARM file to this topic would be helpful to see more detail and for others to make suggestions.
2) I noticed in your plan that the track appears to be FasTrack and that none of the switches have 1-3/8" isolated sections attached. These isolated sections have removable jumpers underneath that allow you to create isolated track sections when removed. They come in three varieties: 1) Full Roadbed (roadbed on both sides, 2) Half-roadbed (roadbed on only one side), and No Roadbed. O-60 and O-72 switches each come with two 1-3/8" half roadbed sections and one 1-3/8" no roadbed section. The way FasTrack O-60 and O-72 switches are made at their diverging ends, they either require these pieces or to cut off part of the roadbed from the adjoining track. [EDIT SCARM doesn't autocratically include these isolated pieces when adding O-60 and O-72 switches to the plan. It relies on you to add them or not.] Even though O31, O36, and O48 switches don't have this 1-3/8" requirement, using the full roadbed isolated sections, allows easy isolation of the connected block(s).
Here's what the O-72 looks like with one of the half-roadbed pieces removed. The Blue circle is the jumper that can be removed to isolate adjacent track sections.
